Chinese Physics C > 2017, Vol. 41 > Issue(12): 124106 DOI: 10.1088/1674-1137/41/12/124106

Pion properties at finite isospin chemical potential with isospin symmetry breaking

1.
Department of Physics, Nanjing Normal University, Nanjing 210023, China
2.
Department of Physics, Nanjing University, Nanjing 210093, China

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Abstract：
Pion properties at finite temperature, finite isospin and baryon chemical potentials are investigated within the SU(2) NJL model. In the mean field approximation for quarks and random phase approximation fpr mesons, we calculate the pion mass, the decay constant and the phase diagram with different quark masses for the m u quark and m d quark, related to QCD corrections, for the first time. Our results show an asymmetry between μ _I<0 and μ _I>0 in the phase diagram, and different values for the charged pion mass (or decay constant) and neutral pion mass (or decay constant) at finite temperature and finite isospin chemical potential. This is caused by the effect of isospin symmetry breaking, which is from different quark masses.
- finite temperature and finite isospin chemical potential,
- isospin symmetry breaking,
- properties of meson

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Zuqing Wu, Jialun Ping and Hongshi Zong. Pion properties at finite isospin chemical potential with isospin symmetry breaking[J]. Chinese Physics C, 2017, 41(12): 124106. doi: 10.1088/1674-1137/41/12/124106

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Received: 2017-08-29

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Supported by National Natural Science Foundation of China (11175088, 11475085, 11535005, 11690030) and the Fundamental Research Funds for the Central Universities (020414380074)

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沈阳化工大学材料科学与工程学院沈阳 110142

Pion properties at finite isospin chemical potential with isospin symmetry breaking

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Pion properties at finite isospin chemical potential with isospin symmetry breaking

Corresponding author:Zuqing Wu,

Corresponding author:Jialun Ping,

Corresponding author:Hongshi Zong,

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