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arXiv · 1907.12332

Chiral susceptibility in Nambu Jona Lasinio model: a Wigner function approach

Arpan Das·Deepak Kumar·Hiranmaya Mishra
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Abstract

We estimate here chiral susceptibility at finite temperature within the framework of the Nambu-Jona-Lasinio model (NJL) using the Wigner function approach. We also estimate it in the presence of chiral chemical potential ($\mu_5$) as well as a non vanishing magnetic field ($B$). We use medium separation regularization scheme (MSS) to calculate the chiral condensate and corresponding susceptibility. It is observed that for a fixed value of chiral chemical potential ($\mu_5$), transition temperature increases with the magnetic field. While for the fixed value of the magnetic field, transition temperature decreases with chiral chemical potential. For a strong magnetic field, we observe non degeneracy in susceptibility for up and down type quarks.

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Arpan Das, Deepak Kumar, Hiranmaya Mishra. 2019-07-29. Chiral susceptibility in Nambu Jona Lasinio model: a Wigner function approach. https://doi.org/10.1103/physrevd.100.094030

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