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Phase transitions i...
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Camargo-Molina, J. ElielUppsala universitet,Högenergifysik
(författare)
Phase transitions in de Sitter spacetimes : Quantum Corrections
- Artikel/kapitelEngelska2023
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American Physical Society,2023
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LIBRIS-ID:oai:DiVA.org:uu-501093
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-501093URI
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https://doi.org/10.1103/PhysRevD.107.063533DOI
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Språk:engelska
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Sammanfattning på:engelska
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We investigate the decay rate of a false vacuum state in de Sitter space at high Hubble rates, using two methods: the Hawking-Moss instanton method which is fully quantum mechanical but relies on the saddlepoint approximation, and the Starobinsky-Yokoyama stochastic approach which is nonperturbative but does not include quantum effects. We use the flux over population method to compute the Hawking-Moss decay rate at one-loop order, and demonstrate that in its domain of validity, it is reproduced by the stochastic calculation using the one-loop constraint effective potential. This suggests that the stochastic approach together with the constraint effective potential can be used to accurately describe vacuum decay beyond the saddle-point approximation.
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Gonzalez, Mariana CarrilloImperial Coll, Blackett Lab, Theoret Phys, London SW7 2AZ, England.
(författare)
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Rajantie, ArttuImperial Coll, Blackett Lab, Theoret Phys, London SW7 2AZ, England.
(författare)
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Uppsala universitetHögenergifysik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Physical Review D: American Physical Society107:62470-00102470-0029
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