Chern-Simons diffusion rate across different phase transitions

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Do Estado de São Paulo-
Autor(es): dc.creatorRougemont, Romulo-
Autor(es): dc.creatorFinazzo, Stefano Ivo-
Data de aceite: dc.date.accessioned2025-08-21T19:04:35Z-
Data de disponibilização: dc.date.available2025-08-21T19:04:35Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2016-05-24-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.93.106005-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231374-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231374-
Descrição: dc.descriptionWe investigate how the dimensionless ratio given by the Chern-Simons diffusion rate ΓCS divided by the product of the entropy density s and temperature T behaves across different kinds of phase transitions in the class of bottom-up nonconformal Einstein-dilaton holographic models originally proposed by Gubser and Nellore. By tuning the dilaton potential, one is able to holographically mimic a first order, a second order, or a crossover transition. In a first order phase transition, ΓCS/sT jumps at the critical temperature (as previously found in the holographic literature), while in a second order phase transition it develops an infinite slope. On the other hand, in a crossover, ΓCS/sT behaves smoothly, although displaying a fast variation around the pseudo-critical temperature. In all the cases, ΓCS/sT increases with decreasing T. The behavior of the Chern-Simons diffusion rate across different phase transitions is expected to play a relevant role for the chiral magnetic effect around the QCD critical end point, which is a second order phase transition point connecting a crossover band to a line of first order phase transition. Our findings in the present work add to the literature the first predictions for the Chern-Simons diffusion rate across second order and crossover transitions in strongly coupled nonconformal, non-Abelian gauge theories.-
Descrição: dc.descriptionInstituto de Física Universidade de São Paulo, Rua do Matão, 1371-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Do Estado de São Paulo, Rua Dr. Bento T. Ferraz, 271-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review D-
???dc.source???: dc.sourceScopus-
Título: dc.titleChern-Simons diffusion rate across different phase transitions-
Tipo de arquivo: dc.typelivro digital-
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