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arXiv · 1904.12749

Conformal perturbation theory confronts lattice results in the vicinity of a critical point

Michele Caselle·Nicodemo Magnoli·Alessandro Nada·Marco Panero·Marcello Scanavino
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Abstract

We study the accuracy and predictive power of conformal perturbation theory by a comparison with lattice results in the neighborhood of the finite-temperature deconfinement transition of SU(2) Yang-Mills theory, assuming that the infrared properties of this non-Abelian gauge theory near criticality can be described by the Ising model. The results of this comparison show that conformal perturbation theory yields quantitatively accurate predictions in a broad temperature range. We discuss the implications of these findings for the description of the critical point (belonging to the same universality class) of another strongly coupled, non-supersymmetric non-Abelian gauge theory: the critical end-point in the phase diagram of QCD at finite temperature and finite quark chemical potential.

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Michele Caselle, Nicodemo Magnoli, Alessandro Nada, Marco Panero, Marcello Scanavino. 2019-09-04. Conformal perturbation theory confronts lattice results in the vicinity of a critical point. https://doi.org/10.1103/physrevd.100.034512

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