Role of axial-vector mesons near the chiral phase transition

Chihiro Sasaki; Masayasu Harada; Wolfram Weise

doi:10.1016/j.nuclphysa.2009.05.076

Role of axial-vector mesons near the chiral phase transition

Chihiro Sasaki, Masayasu Harada, Wolfram Weise

Department of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We present a systematic study of the vector-axial-vector mixing (V-A mixing) in the current correlation functions and its evolution with temperature within an effective field theory. The a₁-ρ-π coupling vanishes at the critical temperature T_c and thus the V-A mixing also vanishes. A remarkable observation is that even for finite m_π the ρ and a₁ meson masses are almost degenerate at T_c. The vanishing V-A mixing at T_c stays approximately intact.

Original language	English
Pages (from-to)	350c-352c
Journal	Nuclear Physics, Section A
Volume	827
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2009.05.076
State	Published - 15 Aug 2009

Keywords

Chiral symmetry restoration
Vector-axial-vector mixing in hot matter

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10.1016/j.nuclphysa.2009.05.076

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title = "Role of axial-vector mesons near the chiral phase transition",

abstract = "We present a systematic study of the vector-axial-vector mixing (V-A mixing) in the current correlation functions and its evolution with temperature within an effective field theory. The a1-ρ-π coupling vanishes at the critical temperature Tc and thus the V-A mixing also vanishes. A remarkable observation is that even for finite mπ the ρ and a1 meson masses are almost degenerate at Tc. The vanishing V-A mixing at Tc stays approximately intact.",

keywords = "Chiral symmetry restoration, Vector-axial-vector mixing in hot matter",

author = "Chihiro Sasaki and Masayasu Harada and Wolfram Weise",

note = "Funding Information: The work has been supported in part by BMBF and by the DFG cluster of excellence “Origin and Structure of the Universe”.",

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T1 - Role of axial-vector mesons near the chiral phase transition

AU - Sasaki, Chihiro

AU - Harada, Masayasu

AU - Weise, Wolfram

N1 - Funding Information: The work has been supported in part by BMBF and by the DFG cluster of excellence “Origin and Structure of the Universe”.

PY - 2009/8/15

Y1 - 2009/8/15

N2 - We present a systematic study of the vector-axial-vector mixing (V-A mixing) in the current correlation functions and its evolution with temperature within an effective field theory. The a1-ρ-π coupling vanishes at the critical temperature Tc and thus the V-A mixing also vanishes. A remarkable observation is that even for finite mπ the ρ and a1 meson masses are almost degenerate at Tc. The vanishing V-A mixing at Tc stays approximately intact.

AB - We present a systematic study of the vector-axial-vector mixing (V-A mixing) in the current correlation functions and its evolution with temperature within an effective field theory. The a1-ρ-π coupling vanishes at the critical temperature Tc and thus the V-A mixing also vanishes. A remarkable observation is that even for finite mπ the ρ and a1 meson masses are almost degenerate at Tc. The vanishing V-A mixing at Tc stays approximately intact.

KW - Chiral symmetry restoration

KW - Vector-axial-vector mixing in hot matter

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U2 - 10.1016/j.nuclphysa.2009.05.076

DO - 10.1016/j.nuclphysa.2009.05.076

M3 - Article

AN - SCOPUS:67651166787

SN - 0375-9474

VL - 827

SP - 350c-352c

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 1-4

ER -

Role of axial-vector mesons near the chiral phase transition

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Keywords

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