Wednesday, October 31, 2012

1210.8026 (Marco Cristoforetti et al.)

The sign problem and the Lefschetz thimble    [PDF]

Marco Cristoforetti, Francesco Di Renzo, Luigi Scorzato
Recently, we have proposed a novel approach (arxiv:1205.3996) to deal with the sign problem that hinders Monte Carlo simulations of many quantum field theories (QFTs). The approach consists in formulating the QFT on a Lefschetz thimble. In this paper we concentrate on the application to a scalar field theory with a sign problem. In particular, we review the formulation and the justification of the approach, and we also describe the Aurora Monte Carlo algorithm that we are currently testing.
View original: http://arxiv.org/abs/1210.8026

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