PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Complex Langevin boundary terms in lattice models
D. Sexty*, E. Seiler, I.O. Stamatescu and M.W. Hansen
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Pre-published on: May 16, 2022
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Abstract
In complex Langevin simulations, the insufficient decay of the probability density near infinity leads to boundary terms that spoil the formal argument for correctness. We present a formulation of this term that is cheaply measurable in lattice models, and in principle allows also the direct estimation of the systematic error of the CL method. Results for a toy model, 3d XY model and HDQCD are presented.
DOI: https://doi.org/10.22323/1.396.0194
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