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arXiv · 1512.08039

The Lefschetz thimble and the sign problem

Luigi Scorzato
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Abstract

In this talk I review the proposal to formulate quantum field theories (QFTs) on a Lefschetz thimble, which was put forward to enable Monte Carlo simulations of lattice QFTs affected by sign problem. First I will review the theoretical justification of the approach, and comment on some open issues. Then, I will review the algorithms that have been proposed and are being tested to represent and simulate a lattice QFT on a Lefschetz thimble. In particular, I will review the lessons from the very first models of QFTs that have been studied with this approach.

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Luigi Scorzato. 2015-12-25. The Lefschetz thimble and the sign problem. https://arxiv.org/abs/1512.08039

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