Real time warm pions from the lattice using an effective theory
High Energy Physics - Phenomenology
2020-12-30 v1 High Energy Physics - Lattice
High Energy Physics - Theory
Nuclear Theory
Abstract
Lattice measurements provide adequate information to fix the parameters of long distance effective field theories in Euclidean time. Using such a theory, we examine the analytic continuation of long distance correlation functions of composite operators at finite temperature from Euclidean to Minkowski space time. We show through an explicit computation that the analytic continuation of the pion correlation function is possible and gives rise to non-trivial effects. Among them is the possibility, supported by lattice computations of Euclidean correlators, that long distance excitations can be understood in terms of (very massive) pions even at temperatures higher than the QCD cross over temperature.
Cite
@article{arxiv.2006.16626,
title = {Real time warm pions from the lattice using an effective theory},
author = {Sourendu Gupta and Rishi Sharma},
journal= {arXiv preprint arXiv:2006.16626},
year = {2020}
}