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Thoughts on the vacuum energy in the quantum N-portrait
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Number of Authors: 1
2015 (English)In: Modern Physics Letters A, ISSN 0217-7323, E-ISSN 1793-6632, Vol. 30, no 36, 1550197Article in journal (Refereed) Published
Abstract [en]

An application of the quantum N-portrait to the Universe is discussed, wherein the spacetime geometry is understood as a Bose-Einstein condensate of N soft gravitons. If near or at the critical point of a quantum phase transition, indications are found that the vacuum energy is partly suppressed by 1/N, as being due to quanta not in the condensate state. Time evolution decreases this suppression, which might have implications for cosmic expansion.

Place, publisher, year, edition, pages
2015. Vol. 30, no 36, 1550197
Keyword [en]
Gravitation, quantum, condensate
National Category
Physical Sciences Mathematics
Identifiers
URN: urn:nbn:se:su:diva-124168DOI: 10.1142/S0217732315501977ISI: 000364405500007OAI: oai:DiVA.org:su-124168DiVA: diva2:889237
Available from: 2015-12-22 Created: 2015-12-15 Last updated: 2015-12-22Bibliographically approved

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Kühnel, Florian
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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