A sonic boom in bubble wall friction

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dc.creatorGláuber Carvalho Dorsch
dc.creatorStephan J. Huber
dc.creatorThomas Konstandin
dc.date.accessioned2024-03-11T13:21:51Z
dc.date.accessioned2025-09-09T01:15:28Z
dc.date.available2024-03-11T13:21:51Z
dc.date.issued2022
dc.identifier.doihttps://doi.org/10.1088/1475-7516/2022/04/010
dc.identifier.issn1475-7516
dc.identifier.urihttps://hdl.handle.net/1843/65619
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Cosmology and Astroparticle Physics
dc.rightsAcesso Restrito
dc.subjectTransição de fase
dc.subjectCosmologia
dc.subject.otherCosmological phase transitions
dc.subject.otherParticle physics
dc.subject.otherCosmology
dc.titleA sonic boom in bubble wall friction
dc.typeArtigo de periódico
local.citation.epage15
local.citation.issue4
local.citation.spage1
local.citation.volume2022
local.description.resumoWe revisit the computation of bubble wall friction during a cosmological first-order phase transition, using an extended fluid Ansatz to solve the linearized Boltzmann equation. A singularity is found in the fluctuations of background species as the wall approaches the speed of sound. Using hydrodynamics, we argue that a discontinuity across the speed of sound is expected on general grounds, which manifests itself as the singularity in the solution of the linearized system. We discuss this result in comparison with alternative approaches proposed recently, which find a regular behaviour of the friction for all velocities.
local.identifier.orcidhttps://orcid.org/0000-0002-6177-366X
local.identifier.orcidhttps://orcid.org/0000-0002-2492-7930
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://iopscience.iop.org/article/10.1088/1475-7516/2022/04/010

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