Volume 518 - The 42nd International Symposium on Lattice Field Theory (LATTICE2025) - Parallel Session QCD at nonzero temperature and density
Developments on analytic continuation from imaginary chemical potential
M. Aliberti*, F. Di Renzo, P. Dimopoulos and D. Gavriel
*: corresponding author
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Pre-published on: April 15, 2026
Published on: —
Abstract
Computations at imaginary values of chemical potential are one of the most popular ways to tackle the sign problem in lattice simulations.
For this reason, it is important to study more than one way for performing the analytic continuation onto the real axis.
In these proceedings we report on different techniques of analytic continuation in this context as a means of getting better control
on the systematic effects.
In particular, by using lattice data generated by the Bielefeld-Parma
collaboration, we compare results which are produced thanks to a novel method that makes use of the Cauchy integral formula with results obtained by other known methods, including the analytic
continuation of multi-point Padé approximants.
DOI: https://doi.org/10.22323/1.518.0104
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