Monte Carlo calculations of the finite density Thirring model

作     者：Andrei Alexandru Gökçe Başar Paulo F. Bedaque Gregory W. Ridgway Neill C. Warrington 

作者机构：Department of Physics The George Washington University Washington D.C. 20052 USA Department of Physics University of Maryland College Park Maryland 20742 USA 

出 版 物：《Physical Review D》 (Phy. Rev. D)

年 卷 期：2017年第95卷第1期

页      面：014502-014502页

核心收录：

基　　金：National Science Foundation  NSF  (1151648) 

主　　题：Finite temperature field theory Lattice QCD Lower-dimensional field theories QCD phase transitions Lattice field theory Metropolis algorithm Monte Carlo methods 

摘      要：We present results of the numerical simulation of the two-dimensional Thirring model at finite density and temperature. The severe sign problem is dealt with by deforming the domain of integration into complex field space. This is the first example where a fermionic sign problem is solved in a quantum field theory by using the holomorphic gradient flow approach, a generalization of the Lefschetz thimble method.