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Contour deformations for non-holomorphic actions

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arxiv 2401.16733 v1 pith:K6Y7CPNJ submitted 2024-01-30 hep-lat

Scott Lawrence , Semeon Valgushev , Jianan Xiao , Yukari Yamauchi This is my paper · ORCID
classification hep-lat
keywords actionscontourdeformationsnon-holomorphicanalogapproacharisecalculations
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We show how contour deformations may be used to control the sign problem of lattice Monte Carlo calculations with non-holomorphic actions. Such actions arise naturally in quantum mechanical scattering problems. The approach is demonstrated in conjunction with the holomorphic gradient flow. As our central example we compute the real-time evolution of a particle in a one-dimensional analog of the Yukawa potential.

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  1. Machine-learning approaches to accelerating lattice simulations

    hep-lat 2025-02 unverdicted

    A review of unbiased machine-learning acceleration methods for lattice field theory, covering flow-based sampling, contour deformations, control variates, and surrogate observables.

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