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Restoration of chiral symmetry in cold and dense Nambu--Jona-Lasinio model with tensor renormalization group

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arxiv 2009.11583 v2 pith:VS3CBAIG submitted 2020-09-24 hep-lat hep-phhep-thnucl-th

Shinichiro Akiyama , Yoshinobu Kuramashi , Takumi Yamashita , Yusuke Yoshimura This is my paper · ORCID
classification hep-lathep-phhep-thnucl-th
keywords chiraldensemodelcoldgroupnambu--jona-lasiniophaseregion
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abstract

We analyze the chiral phase transition of the Nambu--Jona-Lasinio model in the cold and dense region on the lattice developing the Grassmann version of the anisotropic tensor renormalization group algorithm. The model is formulated with the Kogut--Susskind fermion action. We use the chiral condensate as an order parameter to investigate the restoration of the chiral symmetry. The first-order chiral phase transition is clearly observed in the dense region at vanishing temperature with $\mu/T\sim O(10^3)$ on a large volume of $V=1024^4$. We also present the results for the equation of state.

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Cited by 5 Pith papers

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