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Testing Quantum Gravity
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-7200-4962
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
2017 (English)In: International Journal of Modern Physics D, ISSN 0218-2718, Vol. 26, no 12, article id 1743003Article in journal (Refereed) 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

Place, publisher, year, edition, pages
World Scientific, 2017. Vol. 26, no 12, article id 1743003
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Other Physics Topics
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Applied Physics
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URN: urn:nbn:se:ltu:diva-66072DOI: 10.1142/S0218271817430039ISI: 000414411900010OAI: oai:DiVA.org:ltu-66072DiVA, id: diva2:1148575
Note

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

Available from: 2017-10-11 Created: 2017-10-11 Last updated: 2017-11-24Bibliographically approved

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