Pion spectral properties above the chiral crossover of QCD

@article{Lowdon2022PionSP,
  title={Pion spectral properties above the chiral crossover of QCD},
  author={Peter Lowdon and Owe Philipsen},
  journal={Journal of High Energy Physics},
  year={2022},
  volume={2022}
}
Spectral functions encode a wealth of information about the dynamics of any given system, and the determination of their non-perturbative characteristics is a long-standing problem in quantum field theory. Whilst numerical simulations of lattice QCD provide ample data for various Euclidean correlation functions, the inversion required to extract spectral functions is an ill-posed problem. In this work, we pursue previously established constraints imposed by field locality at finite temperature… 

Chiral spin symmetry and the QCD phase diagram

Lattice QCD simulations with chirally symmetric quarks have recently established approximate SU(2)CS\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts}

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