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Quantum Fluctuations and New Instantons I: Linear Unbounded Potential

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dc.contributor.authorMukhanov, V. F.
dc.contributor.authorRabinovici, E.
dc.contributor.authorSorin, A. S.
dc.date.accessioned2024-11-29T10:27:38Z
dc.date.available2024-11-29T10:27:38Z
dc.date.issued2021
dc.description.abstract© 2020 Wiley-VCH GmbHWe consider the decay of a false vacuum in circumstances where the methods suggested by Coleman run into difficulties. We find that in these cases quantum fluctuations play a crucial role. Namely, they naturally induce both ultraviolet and infrared cutoff scales, determined by the parameters of the classical solution, beyond which this solution cannot be trusted anymore. This leads to the appearance of a broad class of new O(4) invariant instantons, which would have been singular in the absence of an ultraviolet cutoff. We apply our results to a case where the potential is unbounded from below in a linear way and in particular show how the problem of small instantons is resolved by taking into account the inevitable quantum fluctuations.
dc.identifier.citationMukhanov, V. F. Quantum Fluctuations and New Instantons I: Linear Unbounded Potential / Mukhanov, V.F., Rabinovici, E., Sorin, A.S. // Fortschritte der Physik. - 2021. - 10.1002/prop.202000100
dc.identifier.doi10.1002/prop.202000100
dc.identifier.urihttps://www.doi.org/10.1002/prop.202000100
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85093819243&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000583213400001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23460
dc.relation.ispartofFortschritte der Physik
dc.titleQuantum Fluctuations and New Instantons I: Linear Unbounded Potential
dc.typeArticle
dspace.entity.typePublication
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