U_A(1) Anomaly at high temperature: the scalar-pseudoscalar splitting in QCD
High Energy Physics - Phenomenology
2010-11-11 v1 High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
We estimate the splitting between the spatial correlation lengths in the scalar and pseudoscalar channels in QCD at high temperature. The splitting is due to the contribution of the instanton/anti-instanton chains in the thermal ensemble, even though instanton contributions to thermodynamic quantities are suppressed. The splitting vanishes at asymptotically high temperatures as , where is the beta function coefficient.
Keywords
Cite
@article{arxiv.1004.1075,
title = {U_A(1) Anomaly at high temperature: the scalar-pseudoscalar splitting in QCD},
author = {Gerald V. Dunne and Alex Kovner},
journal= {arXiv preprint arXiv:1004.1075},
year = {2010}
}
Comments
5 pp