Vector-axialvector mixing from a chiral effective field theory at finite temperature

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dc.creatorHarada, M.
dc.creatorSasaki, C.
dc.creatorWeise, W.
dc.date2008-07-09
dc.date2008-10-06
dc.date.accessioned2026-07-07T12:14:57Z
dc.date.available2026-07-07T12:14:57Z
dc.descriptionWe study the vector-axialvector mixing in a hot medium and its evolution toward the chiral phase transition using different symmetry restoration scenarios based on the generalized hidden local symmetry framework. We show that the presence of the $a_1$ meson reduces the vector spectral function around $ρ$ meson mass and enhances it around $a_1$ meson mass. The coupling strength of $a_1$ to $ρ$ and $π$ vanishes at the critical temperature due to the degenerate $ρ$-$a_1$ masses. This feature holds rigorously in the chiral limit and still stays intact to good approximation for the physical pion mass.
dc.descriptionv2:11 pages, 6 figures, reorganized and expanded the text, new plots and references added, main result and conclusions unchanged
dc.identifierhttps://arxiv.org/abs/0807.1417
dc.identifierhttp://arxiv.org/abs/0807.1417
dc.identifierPhys.Rev.D78:114003,2008
dc.identifierdoi:10.1103/PhysRevD.78.114003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211370
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleVector-axialvector mixing from a chiral effective field theory at finite temperature
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