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arXiv:1412.7855 · Progress of Theoretical and Experimental Physics

Grassmann tensor renormalization group for the one-flavor lattice Gross–Neveu model with finite chemical potential

Shinji Takeda, Yusuke Yoshimura

Published Apr 1, 2015• 70 citations
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Abstract

We apply the Grassmann tensor renormalization group (GTRG) to the one-flavor lattice Gross–Neveu model in the presence of a chemical potential. We compute the fermion number density and its susceptibility and confirm the validity of GTRG for the finite-density system. We introduce a method analogous to the reweighting method for the Monte Carlo method and test it for some parameters.

DOI
10.1093/ptep/ptv022

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