Monte Carlo calculations of the finite density Thirring model

Andrei Alexandru; Gokce Basar; Gregory W. Ridgway; Neill C. Warrington; Paulo F. Bedaque

Monte Carlo calculations of the finite density Thirring model

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arxiv 1609.01730 v2 pith:7KDNAGFH submitted 2016-09-06 hep-lat

Monte Carlo calculations of the finite density Thirring model

Andrei Alexandru , Gokce Basar , Paulo F. Bedaque , Gregory W. Ridgway , Neill C. Warrington This is my paper

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keywords densityfieldfinitemodelproblemsignthirringapproach

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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.

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