Ändra sökning
Länk till posten
Permanent länk

Direktlänk
BETA
Publikationer (10 of 74) Visa alla publikationer
Hansson, J. (2019). Bell's Theorem and its tests: Proof that Nature is super-deterministic - not random.
Öppna denna publikation i ny flik eller fönster >>Bell's Theorem and its tests: Proof that Nature is super-deterministic - not random
2019 (Engelska)Rapport (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.

Förlag
s. 8
Nationell ämneskategori
Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-76603 (URN)10.13140/RG.2.2.22623.61608 (DOI)
Tillgänglig från: 2019-11-04 Skapad: 2019-11-04 Senast uppdaterad: 2019-11-22Bibliografiskt granskad
Hansson, J. (2019). Livet, Universum & Allting: Samlade Populärvetenskapliga Krönikor. Bokförlaget Axplock
Öppna denna publikation i ny flik eller fönster >>Livet, Universum & Allting: Samlade Populärvetenskapliga Krönikor
2019 (Svenska)Bok (Övrig (populärvetenskap, debatt, mm))
Ort, förlag, år, upplaga, sidor
Bokförlaget Axplock, 2019. s. 162
Nationell ämneskategori
Annan fysik Naturvetenskap
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-72480 (URN)978-91-88523-31-0 (ISBN)978-91-88523-32-7 (ISBN)
Tillgänglig från: 2019-01-07 Skapad: 2019-01-07 Senast uppdaterad: 2019-01-14Bibliografiskt granskad
Hansson, J. (2019). The Klein-Alfven Cosmology Revisited.
Öppna denna publikation i ny flik eller fönster >>The Klein-Alfven Cosmology Revisited
2019 (Engelska)Rapport (Övrigt vetenskapligt)
Nationell ämneskategori
Astronomi, astrofysik och kosmologi
Identifikatorer
urn:nbn:se:ltu:diva-73935 (URN)10.13140/RG.2.2.33287.24485 (DOI)
Tillgänglig från: 2019-05-14 Skapad: 2019-05-14 Senast uppdaterad: 2019-05-20
Hansson, J. (2019). The Klein-Alfvén cosmology revisited. Journal of Physics Communication, 3(11), Article ID 115001.
Öppna denna publikation i ny flik eller fönster >>The Klein-Alfvén cosmology revisited
2019 (Engelska)Ingår i: Journal of Physics Communication, E-ISSN 2399-6528, Vol. 3, nr 11, artikel-id 115001Artikel i tidskrift (Refereegranskat) Published
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.

Ort, förlag, år, upplaga, sidor
Institute of Physics (IOP), 2019
Nationell ämneskategori
Astronomi, astrofysik och kosmologi Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-76598 (URN)10.1088/2399-6528/ab4ffa (DOI)000494825100001 ()
Anmärkning

Validerad;2019;Nivå 2;2019-11-06 (johcin)

Tillgänglig från: 2019-11-04 Skapad: 2019-11-04 Senast uppdaterad: 2019-11-22Bibliografiskt granskad
Hansson, J., Dols Duxans, J. & Svensson, M. (2018). Nonlinear Effects of Gravity in Cosmology. Advanced Studies in Theoretical Physics, 12(4), 157-172
Öppna denna publikation i ny flik eller fönster >>Nonlinear Effects of Gravity in Cosmology
2018 (Engelska)Ingår i: Advanced Studies in Theoretical Physics, ISSN 1313-1311, E-ISSN 1314-7609, Vol. 12, nr 4, s. 157-172Artikel i tidskrift (Refereegranskat) Published
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.

Ort, förlag, år, upplaga, sidor
Hikari Ltd, 2018
Nationell ämneskategori
Astronomi, astrofysik och kosmologi Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-68965 (URN)10.12988/astp.2018.71047 (DOI)
Anmärkning

Validerad;2018;Nivå 1;2018-06-04 (andbra)

Tillgänglig från: 2018-05-29 Skapad: 2018-05-29 Senast uppdaterad: 2019-04-02Bibliografiskt granskad
Hansson, J. (2017). Moderna Fysiken på 15 Minuter. Strängnäs: Axplock
Öppna denna publikation i ny flik eller fönster >>Moderna Fysiken på 15 Minuter
2017 (Svenska)Bok (Övrig (populärvetenskap, debatt, mm))
Ort, förlag, år, upplaga, sidor
Strängnäs: Axplock, 2017. s. 115
Nationell ämneskategori
Fysik Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-61367 (URN)978-91-87119-85-9 (ISBN)978-91-87119-86-6 (ISBN)
Tillgänglig från: 2017-01-10 Skapad: 2017-01-10 Senast uppdaterad: 2017-11-24Bibliografiskt granskad
Hansson, J. (2017). Quantivity?.
Öppna denna publikation i ny flik eller fönster >>Quantivity?
2017 (Engelska)Rapport (Övrigt vetenskapligt)
Förlag
s. 6
Nationell ämneskategori
Subatomär fysik Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-63927 (URN)10.13140/RG.2.2.18575.18083 (DOI)
Tillgänglig från: 2017-06-12 Skapad: 2017-06-12 Senast uppdaterad: 2018-05-15Bibliografiskt granskad
Hansson, J. & Francois, S. (2017). Testing Quantum Gravity. International Journal of Modern Physics D, 26(12), Article ID 1743003.
Öppna denna publikation i ny flik eller fönster >>Testing Quantum Gravity
2017 (Engelska)Ingår i: International Journal of Modern Physics D, ISSN 0218-2718, Vol. 26, nr 12, artikel-id 1743003Artikel i tidskrift (Refereegranskat) Published
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.Read More: http://www.worldscientific.com/doi/abs/10.1142/S0218271817430039

Ort, förlag, år, upplaga, sidor
World Scientific, 2017
Nationell ämneskategori
Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-66072 (URN)10.1142/S0218271817430039 (DOI)000414411900010 ()
Anmärkning

Validerad;2017;Nivå 2;2017-10-12 (andbra)

Tillgänglig från: 2017-10-11 Skapad: 2017-10-11 Senast uppdaterad: 2017-11-24Bibliografiskt granskad
Hansson, J. (2016). Black Holes: Anybody out there? (ed.). Electronic Journal of Theoretical Physics, 13(35), 91-94
Öppna denna publikation i ny flik eller fönster >>Black Holes: Anybody out there?
2016 (Engelska)Ingår i: Electronic Journal of Theoretical Physics, ISSN 1729-5254, E-ISSN 1729-5254, Vol. 13, nr 35, s. 91-94Artikel i tidskrift (Refereegranskat) Published
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..

Nationell ämneskategori
Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-9720 (URN)2-s2.0-85007137514 (Scopus ID)863e94d5-c770-479c-ac3d-c017d0566c69 (Lokalt ID)863e94d5-c770-479c-ac3d-c017d0566c69 (Arkivnummer)863e94d5-c770-479c-ac3d-c017d0566c69 (OAI)
Anmärkning

Validerad; 2016; Nivå 1; 20160607 (hansson)

Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad
Hansson, J. (2016). No-Go of Quantized General Relativity. Advanced Studies in Theoretical Physics, 10(8), 415-420
Öppna denna publikation i ny flik eller fönster >>No-Go of Quantized General Relativity
2016 (Engelska)Ingår i: Advanced Studies in Theoretical Physics, ISSN 1313-1311, E-ISSN 1314-7609, Vol. 10, nr 8, s. 415-420Artikel i tidskrift (Refereegranskat) Published
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

Nationell ämneskategori
Annan fysik
Forskningsämne
Tillämpad fysik
Identifikatorer
urn:nbn:se:ltu:diva-61075 (URN)10.12988/astp.2016.6928 (DOI)2-s2.0-85001093572 (Scopus ID)
Anmärkning

Validerad; 2017; Nivå 1; 2016-12-20 (andbra)

Tillgänglig från: 2016-12-14 Skapad: 2016-12-14 Senast uppdaterad: 2017-11-29Bibliografiskt granskad
Organisationer
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-7200-4962

Sök vidare i DiVA

Visa alla publikationer