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Publications (10 of 92) Show all publications
Hansson, J. (2023). Bara nedväxt kan rädda oss. Norrländska Socialdemokraten
Open this publication in new window or tab >>Bara nedväxt kan rädda oss
2023 (Swedish)In: Norrländska SocialdemokratenArticle in journal, News item (Other (popular science, discussion, etc.)) Published
National Category
Other Physics Topics
Identifiers
urn:nbn:se:ltu:diva-101581 (URN)
Available from: 2023-10-05 Created: 2023-10-05 Last updated: 2023-10-16Bibliographically approved
Hansson, J. (2023). Gravity & the magical "Born Rule": Physical implications: Essay given Honorable Mention Award in the Gravity Research Foundation 2023 Awards for Essays on Gravitation.
Open this publication in new window or tab >>Gravity & the magical "Born Rule": Physical implications: Essay given Honorable Mention Award in the Gravity Research Foundation 2023 Awards for Essays on Gravitation
2023 (English)Other (Other academic)
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.

Publisher
p. 10
National Category
Other Physics Topics
Identifiers
urn:nbn:se:ltu:diva-98326 (URN)10.13140/RG.2.2.36465.25447 (DOI)
Available from: 2023-06-13 Created: 2023-06-13 Last updated: 2023-10-16
Hansson, J. (2023). Johan Hansson: Åtta skäl till att kärnkraft är dåraktigt. Dagens Nyheter. (DN) (2023-03-09)
Open this publication in new window or tab >>Johan Hansson: Åtta skäl till att kärnkraft är dåraktigt
2023 (Swedish)In: Dagens Nyheter. (DN), ISSN 1101-2447, no 2023-03-09Article in journal, News item (Other (popular science, discussion, etc.)) Published
Place, publisher, year, edition, pages
Stockholm: Dagens nyheter., 2023
National Category
Other Physics Topics
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-95827 (URN)
Available from: 2023-03-09 Created: 2023-03-09 Last updated: 2023-03-10Bibliographically approved
Hansson, J. (2023). Nedväxt är oundviklig: det enda vi kan påverka är om den blir planerad &kontrollerad eller påtvingad & katastrofal (global kollaps). eFOLKET
Open this publication in new window or tab >>Nedväxt är oundviklig: det enda vi kan påverka är om den blir planerad &kontrollerad eller påtvingad & katastrofal (global kollaps)
2023 (Swedish)In: eFOLKETArticle in journal (Other (popular science, discussion, etc.)) Published
Place, publisher, year, edition, pages
eFOLKETs Vänner, 2023
National Category
Other Physics Topics
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-103021 (URN)
Note

Godkänd;2023;Nivå 0;2023-11-29 (hanlid)

Available from: 2023-11-27 Created: 2023-11-27 Last updated: 2023-11-29Bibliographically approved
Hansson, J. (2023). The Magical “Born Rule” and Quantum “Measurement”: Implications for Physics. Foundations, 3(4), 634-642
Open this publication in new window or tab >>The Magical “Born Rule” and Quantum “Measurement”: Implications for Physics
2023 (English)In: Foundations, E-ISSN 2673-9321, Vol. 3, no 4, p. 634-642Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
MDPI, 2023
Keywords
Born rule, quantum measurement, quantum to classical
National Category
Other Physics Topics
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-101531 (URN)10.3390/foundations3040038 (DOI)
Funder
Luleå University of Technology, 223110
Note

Validerad;2023;Nivå 1;2023-10-02 (joosat);

Available from: 2023-10-02 Created: 2023-10-02 Last updated: 2023-10-02Bibliographically approved
Hansson, J. (2023). Universum för nyfikna: och andra populärvetenskapliga essäer. Stockholm: Santérus Förlag
Open this publication in new window or tab >>Universum för nyfikna: och andra populärvetenskapliga essäer
2023 (Swedish)Book (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Stockholm: Santérus Förlag, 2023. p. 78
National Category
Other Physics Topics
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-95732 (URN)978-91-7359-193-5 (ISBN)
Available from: 2023-02-27 Created: 2023-02-27 Last updated: 2023-03-17Bibliographically approved
Hansson, J. (2023). Why Gravity is Non-Quantum. International Journal of Quantum Foundations Supplement, 5(1), 1-6
Open this publication in new window or tab >>Why Gravity is Non-Quantum
2023 (English)In: International Journal of Quantum Foundations Supplement, E-ISSN 2375-4729, Vol. 5, no 1, p. 1-6Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
Shanxi University, 2023
Keywords
Quantum Gravity, Classical, Nonlinearity, Quantum Spacetime, Objective Events
National Category
Other Physics Topics
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-95245 (URN)
Note

Godkänd;2023;Nivå 0;2023-01-16 (hanlid);

Part of supplement: Quantum Speculations

Available from: 2023-01-12 Created: 2023-01-12 Last updated: 2023-03-30Bibliographically approved
Hansson, J. (2022). Den moderna fysiken på 15 minuter. Santérus Förlag
Open this publication in new window or tab >>Den moderna fysiken på 15 minuter
2022 (Swedish)Book (Other (popular science, discussion, etc.))
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.

Place, publisher, year, edition, pages
Santérus Förlag, 2022. p. 90
National Category
Physical Sciences
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-89739 (URN)978-91-7359-183-6 (ISBN)
Available from: 2022-03-17 Created: 2022-03-17 Last updated: 2022-07-14Bibliographically approved
Hansson, J. (2022). DN Debatt Repliker. "Riktigt banbrytande forskning kommer sällan från väntat håll". Dagens Nyheter. (DN) (2022-12-13)
Open this publication in new window or tab >>DN Debatt Repliker. "Riktigt banbrytande forskning kommer sällan från väntat håll"
2022 (Swedish)In: Dagens Nyheter. (DN), ISSN 1101-2447, no 2022-12-13Article in journal, News item (Other (popular science, discussion, etc.)) Published
Place, publisher, year, edition, pages
Stockholm: Dagens nyheter, 2022
National Category
Physical Sciences
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-94850 (URN)
Available from: 2022-12-15 Created: 2022-12-15 Last updated: 2023-03-16Bibliographically approved
Hansson, J. (2022). The 11-Year Magnetic Solar Cycle: Chaos Control Due to Jupiter. Solar system research, 56(3), 191-194
Open this publication in new window or tab >>The 11-Year Magnetic Solar Cycle: Chaos Control Due to Jupiter
2022 (English)In: Solar system research, ISSN 0038-0946, E-ISSN 1608-3423, Vol. 56, no 3, p. 191-194Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
Elsevier, 2022
National Category
Fusion, Plasma and Space Physics
Research subject
Applied Physics
Identifiers
urn:nbn:se:ltu:diva-91239 (URN)10.1134/S0038094622030030 (DOI)000809162100007 ()2-s2.0-85131731194 (Scopus ID)
Note

Validerad;2022;Nivå 2;2022-06-17 (hanlid)

Available from: 2022-06-10 Created: 2022-06-10 Last updated: 2022-06-30Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-7200-4962

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