PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Roberge-Weiss transitions at imaginary isospin chemical potential
A. Chabane* and G. Endrodi
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Pre-published on: May 16, 2022
Published on:
Abstract
At finite imaginary values of the chemical potential, QCD is free of the sign problem. Moreover, at
high temperatures the partition function exhibits a new symmetry (the Roberge-Weiss symmetry)
connecting phases with different orientations of the Polyakov loop, and the corresponding phase
transitions between these. In this contribution we investigate the perturbative one-loop effective
potential for the Polyakov loop in the presence of imaginary isospin as well as baryon chemical
potentials. This leads to a novel phase diagram, which reveals an interesting insight about the
rich phase structure of the system and the center symmetry breaking. We check the perturbative
results using direct lattice simulations.
DOI: https://doi.org/10.22323/1.396.0097
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