PreprintCC BY 4.0arXiv
Lee-Yang zeros and edge singularity in a mean-field approach
Abstract
The analytic structure of the partition function in finite-volume systems is investigated at complex chemical potentials in a minimal mean-field effective model of QCD with finite-size effects incorporated. We discuss the temperature dependence of the Lee-Yang zeros and their relation to the edge singularity for various system sizes. Different methods for locating the critical point based on finite-size scaling of Lee-Yang zeros and susceptibility ratios are compared. We demonstrate that these methods can successfully identify the critical point, whereas a careful treatment of corrections from irrelevant operators is crucial for its accurate determination.
Versions
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BibTeX
@misc{wada2026leeyang,
title = {{Lee-Yang zeros and edge singularity in a mean-field approach}},
author = {Tatsuya Wada and Győző Kovács and Masakiyo Kitazawa and Takahiro M. Doi},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2605.19964},
eprint = {2605.19964},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.19964},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Lee-Yang zeros and edge singularity in a mean-field approach
AU - Tatsuya Wada
AU - Győző Kovács
AU - Masakiyo Kitazawa
AU - Takahiro M. Doi
PY - 2026
DA - 2026/09/21
PB - arXiv
DO - 10.48550/arxiv.2605.19964
UR - https://arxiv.org/abs/2605.19964
AB - The analytic structure of the partition function in finite-volume systems is investigated at complex chemical potentials in a minimal mean-field effective model of QCD with finite-size effects incorporated. We discuss the temperature dependence of the Lee-Yang zeros and their relation to the edge singularity for various system sizes. Different methods for locating the critical point based on finite-size scaling of Lee-Yang zeros and susceptibility ratios are compared. We demonstrate that these methods can successfully identify the critical point, whereas a careful treatment of corrections from irrelevant operators is crucial for its accurate determination.
ER -