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  • 1.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Bara nedväxt kan rädda oss2023Ingår i: Norrländska SocialdemokratenArtikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
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    fulltext
  • 2.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Gravity & the magical "Born Rule": Physical implications: Essay given Honorable Mention Award in the Gravity Research Foundation 2023 Awards for Essays on Gravitation2023Övrigt (Övrigt vetenskapligt)
    Abstract [en]

    The arena of quantum theory is the abstract, unobserved and unobservable, M-dimensional Hilbert space [not equal to] spacetime. II. The arena of observations, and all events (i.e. everything) in the real physical world, is the classical 4-dimensional physical spacetime of general relativity. III. The "Born Rule" is the random process "magically" transforming I. into II. Formulations of quantum theory directly in real physical spacetime constitute examples of "locally real" theories (Clauser & Horne) and are empirically refuted by the numerous tests of Bell's theorem. When separated and treated correctly in this way, a number of fundamental problems and "paradoxes" of gravity vs. quantum theory simply vanish, such as the black hole information paradox, the cosmological constant problem and quantization of general relativity.

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    fulltext
  • 3.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Johan Hansson: Åtta skäl till att kärnkraft är dåraktigt2023Ingår i: Dagens Nyheter. (DN), ISSN 1101-2447, nr 2023-03-09Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
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  • 4.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Nedväxt är oundviklig: det enda vi kan påverka är om den blir planerad &kontrollerad eller påtvingad & katastrofal (global kollaps)2023Ingår i: eFOLKETArtikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
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    fulltext
  • 5.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The Magical “Born Rule” and Quantum “Measurement”: Implications for Physics2023Ingår i: Foundations, E-ISSN 2673-9321, Vol. 3, nr 4, s. 634-642Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    I. The arena of quantum mechanics and quantum field theory is the abstract, unobserved and unobservable, M-dimensional formal Hilbert space ≠ spacetime. II. The arena of observations—and, more generally, of all events (i.e., everything) in the real physical world—is the classical four-dimensional physical spacetime. III. The “Born rule” is the random process “magically” transforming I into II. Wavefunctions are superposed and entangled only in the abstract space I, never in spacetime II. Attempted formulations of quantum theory directly in real physical spacetime actually constitute examples of “locally real” theories, as defined by Clauser and Horne, and are therefore already empirically refuted by the numerous tests of Bell’s theorem in real, controlled experiments in laboratories here on Earth. Observed quantum entities (i.e., events) are never superposed or entangled as they: (1) exclusively “live” (manifest) in real physical spacetime and (2) are not described by entangled wavefunctions after “measurement” effectuated by III. When separated and treated correctly in this way, a number of fundamental problems and “paradoxes” of quantum theory vs. relativity (i.e., spacetime) simply vanish, such as the black hole information paradox, the infinite zero-point energy of quantum field theory and the quantization of general relativity.

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    fulltext
  • 6.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Universum för nyfikna: och andra populärvetenskapliga essäer2023Bok (Övrig (populärvetenskap, debatt, mm))
  • 7.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Why Gravity is Non-Quantum2023Ingår i: International Journal of Quantum Foundations Supplement, E-ISSN 2375-4729, Vol. 5, nr 1, s. 1-6Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The comprehensive analysis of Niels Bohr shows that the classical world is a necessary additional independent conceptual structure not derivable from quantum mechanics. The results of measurement must always be expressed classically. Furthermore, neither linear “decoherence”, nor any other unitary linear models/interpretations can ever result in the observed nonlinear classical physics. As we will see, the invariant objective classical events constituting the dynamically nonlinear spacetime of general relativity is this classical structure. Hence, classical gravitation is required to make the abstract and purely formal, perfectly linear, quantum mechanical eternal coexistence of many mutually incompatible possibilities into the concrete reality of the observed nonlinear world. It also means that “Quantum Gravity” is a pseudo-problem, a mirage, “Quantum Spacetime” an oxymoron.

    Ladda ner fulltext (pdf)
    fulltext
  • 8.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Den moderna fysiken på 15 minuter2022Bok (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    I en serie korta oberoende kapitel, som kan läsas på runt 15 minuter, förklarar Johan Hansson hela den moderna fysiken. Han berättar bland annat om svarta hål, kvantfysik, big bang, kaos­teori, partikelfysik, kvantgravitation och personerna bakom ­teorierna och upptäckterna.

  • 9.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    DN Debatt Repliker. "Riktigt banbrytande forskning kommer sällan från väntat håll"2022Ingår i: Dagens Nyheter. (DN), ISSN 1101-2447, nr 2022-12-13Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 10.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The 11-Year Magnetic Solar Cycle: Chaos Control Due to Jupiter2022Ingår i: Solar system research, ISSN 0038-0946, E-ISSN 1608-3423, Vol. 56, nr 3, s. 191-194Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The observed magnetic field of the Sun is believed to originate from a “dynamo-effect” in its convective surface layer. However, there is no natural 11-year timescale in such models. We show that this timescale in the mean naturally and automatically arise through magnetic “chaos-control” of the inherently chaotic solar dynamo, mainly due to Jupiter, while also conforming to real and observed sunspot characteristics.

  • 11.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Why Gravity is Non-Quantum2022Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The comprehensive analysis of Niels Bohr shows that the classical world is a necessary additional independent conceptual structure not derivable from quantum mechanics. The results of measurement mustalways be expressed classically. Furthermore, neither linear "decoherence", nor any other unitary linear models/interpretations can ever result in the observed nonlinear classical physics. As we will see, the invariant objective classical events constituting the dynamically nonlinear spacetime of general relativity is this classical structure. Hence,classical gravitation is required to make the abstract and purely formal, perfectly linear, quantum mechanical eternal coexistence of many mutually incompatible possibilities into the concrete reality of the observed nonlinear world. It also means that "Quantum Gravity" is a pseudo-problem, a mirage, "Quantum Spacetime" an oxymoron.

    Ladda ner fulltext (pdf)
    fulltext
  • 12.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    A Classical Resolution of the Cosmological Constant Problem2021Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The "Cosmological Constant Problem" is generally regarded as one of the outstanding unsolved problems in physics. By looking at the actual physics behind the mathematics we show that a natural and simple resolution is provided by the fact that general relativity, the theory used to model cosmology, is a fundamentally classical theory of actual classical events constituting and defining spacetime.

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    fulltext
  • 13.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Gravitation: the most fundamental interaction2021Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The comprehensive analysis by Niels Bohr shows that the classical world is a necessary additional independent structure not derivable from quantum mechanics. The results of measurement must be expressed classically; there must be a classical region of every experiment where physicists can set apparatus, read pointers and so on. As we will see, the events constituting spacetime of general relativity is this classical structure. Hence, gravitation is required to make the formal quantum mechanical coexistence of many mutually incompatible possibilities result in the concrete reality of the normal world, making gravitation the most fundamental interaction. It also means that “Quantum Gravity” is a pseudo-problem, a mirage, “Quantum Spacetime” an oxymoron.

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    Gravitation: the most fundamental interaction
  • 14.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The Quantum Measurement Problem2021Ingår i: International Journal of Quantum Foundations, E-ISSN 2375-4729, Vol. Supplement 3, nr 2, s. 29-32Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The quantum measurement problem is the most fundamental question of all: How the ghostly quantum mechanical coexistence of many mutually incompatible possibilities result in the concrete reality of the normal world, even though we and our measuring instruments are all made of atoms obeying quantum mechanics. In this brief article we lay down the criteria for such a mechanism.

  • 15.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Bell’s theorem and its tests: Proof that nature is superdeterministic—Not random2020Ingår i: Physics essays, ISSN 0836-1398, Vol. 33, nr 2, s. 216-218Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    By analyzing the same Bell experiment in different reference frames, we show that nature at its fundamental level is superdeterministic, not random, in contrast to what is indicated by orthodox quantum mechanics. Events—including the results of quantum mechanical measurements—in global space-time are fixed prior to measurement.

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    Superdeterminism
  • 16.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The 11-year magnetic Solar Cycle: Chaos control due to Jupiter2020Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The observed magnetic field of the Sun is believed to originate from a "dynamo-effect" in its convective surface layer. However, there is no natural 11-year timescale in such models. We show that this major magnetic solar cycle naturally may arise through magnetic "chaos- control" of the inherently chaotic solar dynamo, mainly due to Jupiter.

    Ladda ner fulltext (pdf)
    fulltext
  • 17.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The Quantum Measurement Problem2020Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The quantum measurement problem is the most fundamental question of all: How the ghostly quantum mechanical coexistence of many mutually incompatible possibilities result in the concrete reality of the normal world, even though we and our measuring instruments are all made of atoms obeying quantum mechanics. In this brief article we lay down the criteria for such a mechanism.

    Ladda ner fulltext (pdf)
    The Quantum Measurement Problem
  • 18.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Bell's Theorem and its tests: Proof that Nature is super-deterministic - not random2019Rapport (Övrigt vetenskapligt)
    Abstract [en]

    By analyzing the same Bell experiment in different reference frames we show that nature at its fundamental level is super-deterministic, not random, in contrast to what is indicated by orthodox quantum mechanics. Events - including the results of quantum mechanical measurements - in global space-time are fixed prior to measurement.

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    fulltext
  • 19.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Livet, Universum & Allting: Samlade Populärvetenskapliga Krönikor2019Bok (Övrig (populärvetenskap, debatt, mm))
  • 20.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The Klein-Alfven Cosmology Revisited2019Manuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    The Klein-Alfven model is based on the pragmatic belief that alsocosmology, just like all other elds of physics, should be based onphysical laws independently tested in the laboratory. It actually hasa number of attractive features, described in this article. As almostall matter in the known universe is in the plasma state, the modelis by necessity based on both gravity and electromagnetism, and asmost cosmic plasmas are inhomogeneous and magnetized, it is auto-matically inhomogeneous (as is the real universe). It is not perfect(no models are), but many of the outstanding unsolved \problems" ofthe contemporary standard big bang-model of cosmology are eithersolved/sidestepped by, or non-existent in, the Klein-Alfven model.One should remember that the standard model of cosmology also isjust that - a model, and highly idealized at that, with many ad hocingredients and a large number of free parameters and hypotheticalingredients that are xed only through comparison with cosmologicaldata in a global best-t fashion. It is not, and should never be con-sidered to be, sacrosanct. If a comparable number of man-hours hadbeen invested in the direction of the Klein-Alfven model it is plausi-ble that it would describe the real observed universe as good as, oreven better than, the big bang-model - with much fewer speculativeadditions to known physics.

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  • 21.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The Klein-Alfvén cosmology revisited2019Ingår i: Journal of Physics Communication, E-ISSN 2399-6528, Vol. 3, nr 11, artikel-id 115001Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Klein-Alfvén model is based on the pragmatic belief that also cosmology, just like all other fields of physics, should be based on physical laws independently tested in the laboratory. It actually has a number of attractive features, described in this article. As almost all matter in the known universe is in the plasma state, the model is by necessity based on both gravity and electromagnetism, and as most cosmic plasmas are inhomogeneous and magnetized, it is automatically inhomogeneous (as is the real universe). It is not perfect (no models are), but many of the outstanding unsolved 'problems' of the contemporary standard big bang-model of cosmology are either solved/sidestepped by, or non-existent in, the Klein-Alfvén model. One should remember that the standard model of cosmology also is just that—a model, and highly idealized at that, with many ad hoc ingredients and a large number of free parameters and hypothetical ingredients that are fixed only through comparison with cosmological data in a global best-fit fashion. It is not, and should never be considered to be, sacrosanct. If a comparable number of man-hours had been invested in the direction of the Klein-Alfvén model it is plausible that it would describe the real observed universe as good as, or even better than, the big bang-model—with much fewer speculative additions to known physics.

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    fulltext
  • 22.
    Hansson, Johan
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Dols Duxans, Jaime
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Svensson, Martin
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Nonlinear Effects of Gravity in Cosmology2018Ingår i: Advanced Studies in Theoretical Physics, ISSN 1313-1311, E-ISSN 1314-7609, Vol. 12, nr 4, s. 157-172Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We consider some nonlinear effects of gravity in cosmology. Possible physically interesting consequences include: non-requirement of dark matter and dark energy, asymmetric gravitational matter-creation, emergent homogeneity/isotropy & asymptotic flatness, resolution of "cosmic coincidence" Omega_m \sim Omega_lambda, effective cutoff of gravitational interaction at the scale of cosmic voids.

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    fulltext
  • 23.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Moderna Fysiken på 15 Minuter2017Bok (Övrig (populärvetenskap, debatt, mm))
  • 24.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Quantivity?2017Rapport (Övrigt vetenskapligt)
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    fulltext
  • 25.
    Hansson, Johan
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Francois, Stephane
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Testing Quantum Gravity2017Ingår i: International Journal of Modern Physics D, ISSN 0218-2718, Vol. 26, nr 12, artikel-id 1743003Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The search for a theory of quantum gravity is the most fundamental problem in all of theoretical physics, but there are as yet no experimental results at all to guide this endeavor. What seems to be needed is a pragmatic way to test if gravitation really occurs between quantum objects or not. In this paper, we suggest such a potential way out of this deadlock, utilizing macroscopic quantum systems; superfluid helium, gaseous Bose–Einstein condensates and “macroscopic” molecules. It turns out that true quantum gravity effects — here defined as observable gravitational interactions between truly quantum objects — could and should be seen (if they occur in nature) using existing technology. A falsification of the low-energy limit in the accessible weak-field regime would also falsify the full theory of quantum gravity, making it enter the realm of testable, potentially falsifiable theories, i.e. becoming real physics after almost a century of pure theorizing. If weak-field gravity between quantum objects is shown to be absent (in the regime where the approximation should apply), we know that gravity then is a strictly classical phenomenon absent at the quantum level.

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    fulltext
  • 26.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Black Holes: Anybody out there?2016Ingår i: Electronic Journal of Theoretical Physics, E-ISSN 1729-5254, Vol. 13, nr 35, s. 91-94Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Using analytical results from both general relativity and quantum mechanics weshow that physical black holes probably do not exist. This would actually be a boon totheoretical physics, for example as:i) General relativity would then be globally valid in the (classical) physical universe, due to itsnon-singular nature.ii) The black hole information paradox would vanish.iii) No event horizon would mean no Hawking radiation, resolving the causal paradox that foran outside observer it takes an infinite time for the black hole to form whereas it evaporates infinite time.Astrophysical applications that seem to require black holes (quasars/AGNs, some binarysystems, stellar motions near the center of our galaxy, etc) can still be fulfilled by compactbut non-singular masses, M..

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    fulltext
  • 27.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    No-Go of Quantized General Relativity2016Ingår i: Advanced Studies in Theoretical Physics, ISSN 1313-1311, E-ISSN 1314-7609, Vol. 10, nr 8, s. 415-420Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this article we show: i) The impossibility of actively “quantizing” general relativity. ii) That the key to quantum gravity - a theory for “deducing” the macroscopic theory of general relativity - is to explain, from a fundamental microscopic theory, why the inertial mass is proportional to the gravitational mass, mi=mg = const, in the classical limit

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    fulltext
  • 28.
    Hansson, Johan
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Francois, Stephane
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Testing Quantum Gravity2016Rapport (Refereegranskat)
    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 29.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Black Holes: Anybody out there?2015Rapport (Refereegranskat)
    Abstract [en]

    Using analytical results from both general relativity and quantummechanics we show that physical black holes probably do not exist.This would actually be a boon to theoretical physics, for example as:i) General relativity would then be globally valid in the (classical)physical universe, due to its non-singular nature.ii) The black hole information paradox would vanish.iii) No event horizon would mean no Hawking radiation, resolving thecausal paradox that for an outside observer it takes an innite timefor the black hole to form whereas it evaporates in nite time.Astrophysical applications that seem to require black holes (quasars/AGNs,stellar motions near the center of our galaxy, etc) can still be fullledby compact but non-singular masses, M.

    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 30.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    No-Go of Quantized General Relativity2015Rapport (Refereegranskat)
  • 31.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    "Quantum machine" to solve quantum "measurement problem"?2015Ingår i: Advanced Studies in Theoretical Physics, ISSN 1313-1311, E-ISSN 1314-7609, Vol. 9, nr 5, s. 233-236Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Recently a study of the rst superposed mechanical quantum object(\machine") visible to the naked eye was published [1]. However, as weshow, it turns out that if the object would actually be observed, i.e.would interact with an optical photon, the quantum behavior shouldvanish. This, the actual observation, has long been suspected in manyinterpretations of quantum mechanics to be what makes the transitionquantum ! classical, but so far it has not been available for direct ex-perimental study in a mechanical system. We show how any interaction,even a purely quantum one, of sucient strength can constitute a physi-cal \measurement" - essentially the emergence of an eectively classicalobject - active observation thus being a sucient but not necessary cri-terion. So it seems we have in this case of the \quantum machine" aunique possibility to study, and possibly solve, the long-standing \mea-surement problem" of quantum mechanics.

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    FULLTEXT01
  • 32.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The 10 Biggest Unsolved Problems in Physics2015Rapport (Refereegranskat)
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    FULLTEXT01
  • 33.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The 10 Biggest Unsolved Problems in Physics2015Ingår i: International Journal of Modern Physics and Applications, ISSN 2381-6945, Vol. 1, nr 1, s. 12-16Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In 1900, the British physicist Lord Kelvin declared: “There is nothing new to discover in physics. All that remains is to more accurately measure its quantities.” In the same year quantum physics was born and three decades later it, and Einstein’s theory of relativity, had completely revolutionized and transformed physics. Today, hardly anyone would dare say that our knowledge of the universe, and everything in it, is almost complete. On the contrary, every new discovery appears to open a Pandora’s Box of larger and deeper issues. I have selected some of today’s biggest unsolved riddles in physics. Just like Moses, I stop arbitrarily at 10. Here follow these “Ten Com...plications” with a brief explanation/justification. They may be seen as a roadmap for future important work.

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    FULLTEXT01
  • 34.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Microscopic gravity?2014Rapport (Refereegranskat)
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    FULLTEXT01
  • 35.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Physical Origin of Elementary Particle Masses2014Ingår i: Electronic Journal of Theoretical Physics, E-ISSN 1729-5254, Vol. 11, nr 30, s. 87-100Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In contemporary particle physics, the masses of fundamental particles are incalculable constants, being supplied by experimental values. Inspired by observation of the empirical particle mass spectrum, and their corresponding physical interaction couplings, we propose that the masses of elementary particles arise solely due to the self-interaction of the fields associated with the charges of a particle. A first application of this idea is seen to yield correct order of magnitude predictions for neutrinos, charged leptons and quarks. We then discuss more ambitious models, where also different generations may arise from e.g. self-organizing bifurcations due to the underlying non-linear dynamics, with the coupling strength acting as "non-linearity" parameter. If the model is extended to include gauge bosons, the photon is automatically the only fundamental particle to remain massless as it has no charges. It results that gluons have an effective range ~ 1fm, physically explaining why QCD has finite reach.

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  • 36.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    “Quantum machine” to solve quantum “measurement problem”?2014Rapport (Refereegranskat)
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  • 37.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Physical Origin of Elementary Particle Masses2013Rapport (Refereegranskat)
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  • 38.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    On the Origin of Elementary Particle Masses2012Rapport (Refereegranskat)
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  • 39.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Reality or Locality? Proposed Test to Decide How Nature Breaks Bell's Inequality2012Ingår i: Physics Research International, ISSN 2090-2220, E-ISSN 2090-2239, Vol. 2012, artikel-id 352543Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Bell's theorem, and its experimental tests, has shown that the two premises for Bell's inequalitylocality and objective realitycannot both hold in nature, as Bell's inequality is broken. A simple test is proposed, which for the first time may decide which alternative nature actually prefers on the fundamental, quantum level. If each microscopic event is truly random (e.g., as assumed in orthodox quantum mechanics) objective reality is not valid whereas if each event is described by an unknown but deterministic mechanism (hidden variables) locality is not valid. This may be analyzed and decided by the well-known reconstruction method of Ruelle and Takens; in the former case no structure should be discerned, in the latter a reconstructed structure should be visible. This could in principle be tested by comparing individual hits in a double-slit experiment, but in practice a single fluorescent atom, and its (seemingly random) temporal switching between active/inactive states would possibly be better/more practical, easier to set up, observe, and analyze. However, only imagination limits the list of possible experimental setups.

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  • 40.
    Hansson, Johan
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Ponga, Anna
    LTU.
    Pulsars: Cosmic permanent “neutromagnets”?2011Ingår i: ISRN Astronomy and Astrophysics, ISSN 2090-4738, E-ISSN 2090-4746, Vol. 2011, nr Article ID 378493Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We argue that pulsars may be spin-polarized neutron stars, that is, cosmic permanent magnets. This would simply explain several observational facts about pulsars, including the “beacon effect” itself, that is, the static/stable misalignment of rotational and magnetic axes, the extreme temporal stability of the pulses, and the existence of an upper limit for the magnetic field strength, coinciding with the one observed in “magnetars.” Although our model admittedly is speculative, this latter fact seems to us unlikely to be pure coincidence.

  • 41.
    Hansson, Johan
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Lindkvist, Jesper
    Inhomogeneous structure formation may alleviate need for accelerating universe2010Ingår i: The Open Astronomy Journal, E-ISSN 1874-3811, Vol. 3, s. 145-149Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    When taking the real, inhomogeneous and anisotropic matter distribution in the semi-local universe into account, there may be no need to postulate an accelerating expansion of the universe despite recent type Ia supernova data. Local curvatures must be integrated (over all space) to obtain the global curvature of the universe, which seems to be very close to zero from cosmic microwave background data. As gravitational structure formation creates bound regions of positive curvature, the regions in between become negatively curved in order to comply with a vanishing global curvature. The actual dynamics of the universe is altered due to the self-induced inhomogeneities, again more prominently so as structure formation progresses. Furthermore, this negative curvature will increase as a function of time as structure formation proceeds, which mimics the effect of "dark energy" with negative pressure. Hence, the "acceleration" may be merely a mirage. We make a qualitative and semi-quantitative analysis, for pedagogical reasons using newtonian gravity corrected for special relativistic effects (which works surprisingly well) to corroborate and illustrate/visualize these statements. This article may be seen as an attempt to communicate to a larger number of people the necessity of starting to take seriously the real, observed inhomogeneous distribution and the nonlinearities of nonperturbative general relativity, and their impact on the dynamics and behavior of the cosmos instead of allowing an oversimplified cosmological model to generate a consensus world-view of a cosmos allegedly dominated by mysterious dark energy.

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  • 42.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Newtonian quantum gravity2010Ingår i: Physics essays, ISSN 0836-1398, Vol. 23, nr 1, s. 53-56Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A Newtonian approach to quantum gravity is studied. At least for weak gravitational fields, it should be a valid approximation. Such an approach can be used to point out problems and prospects inherent in a more exact theory of quantum gravity, yet to be discovered. Newtonian quantum gravity, e.g., shows promise for prohibiting black holes altogether (which would eliminate singularities and also solve the black hole information paradox), gives gravitational radiation even in the spherically symmetric case, and supports nonlocality (quantum entanglement). Its predictions should also be testable at length scales well above the "Planck scale" by high-precision experiments feasible with existing technology.

  • 43.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Nonlinear gauge interactions: A possible solution to the “measurement problem” in quantum mechanics2010Ingår i: Physics essays, ISSN 0836-1398, Vol. 23, nr 2, s. 237-241Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Two fundamental and unsolved problems in physics are as follows: (i) the resolution of the "measurement problem" in quantum mechanics and (ii) the quantization of strongly nonlinear (non-Abelian) gauge theories. The aim of this paper is to suggest that these two problems might be linked and that a mutual simultaneous solution to both might exist. We propose that the mechanism responsible for the "collapse of the wave function" in quantum mechanics is the nonlinearities already present in the theory via non-Abelian gauge interactions. Unlike all other models of spontaneous collapse, our proposal is, to the best of our knowledge, the only one that does not introduce any new elements into the theory. A possible experimental test of the model would be to compare the coherence lengths-here defined as the distance over which the quantum mechanical superposition is still valid-e.g., electrons and photons in a double-slit experiment. The electrons should have a finite coherence length, while photons should have a much longer coherence length (in principle infinite, if gravity-a very weak effect indeed unless we approach the Planck scale-is ignored).

  • 44.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    The "Proton Spin Crisis" - a Quantum Query2010Ingår i: Progress in Physics, ISSN 1555-5534, E-ISSN 1555-5615, Vol. 3, s. 51-52Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The "proton spin crisis" was introduced in the late 1980s, when the EMC-experiment revealed that little or nothing of a proton's spin seemed to be carried by its quarks. The main objective of this paper is to point out that it is wrong to assume that the proton spin, as measured by completely di erent experimental setups, should be the same in all circumstances, an assumption explicitly made in all present theoretical treatments of the "crisis". As spin is a genuine quantum property, without any objective existence outside its measuring apparatus context, proper account of quantum mechanical measurement theory must be taken.

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  • 45.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Aspects of nonrelativistic quantum gravity2009Ingår i: Brazilian journal of physics, ISSN 0103-9733, E-ISSN 1678-4448, Vol. 39, nr 4, s. 707-710Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A nonrelativistic approach to quantum gravity is studied. At least for weak gravitational fields it should be a valid approximation. Such an approach can be used to point out problems and prospects inherent in a more exact theory of quantum gravity, yet to be discovered. Nonrelativistic quantum gravity, e.g., shows promise for prohibiting black holes altogether (which would eliminate singularities and also solve the black hole information paradox), gives gravitational radiation even in the spherically symmetric case, and supports non-locality (quantum entanglement). Its predictions should also be testable at length scales well above the "Planck scale", by high-precision experiments feasible with existing technology.

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  • 46.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Big Bang på 15 minuter - Stora skrällen2008Ingår i: Allt om Vetenskap, ISSN 1652-3318, nr 4, s. 104-108Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 47.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Kosmologin på 15 minuter - Läran om allt2008Ingår i: Allt om Vetenskap, ISSN 1652-3318, nr 1, s. 104-108Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 48.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Kvantgravitationen på 15 minuter - Den gäckande teorin2008Ingår i: Allt om Vetenskap, ISSN 1652-3318, nr 3, s. 104-108Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 49.
    Hansson, Johan
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Zernell, Lasse
    Allt om Vetenskap.
    Preonstjärnor - Äntligen något nytt på himlen2008Ingår i: Allt om Vetenskap, ISSN 1652-3318, nr 8, s. 82-89Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 50.
    Hansson, Johan
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
    Strängteorin på 15 minuter - Teorin om allt... eller inget?2008Ingår i: Allt om Vetenskap, ISSN 1652-3318, nr 2, s. 104-108Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
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