Temporal mesonic correlators at NLO for any quark mass
Abstract
We present NLO results for thermal imaginary-time correlators in the vector and scalar channels as a function of the quark mass. The range of quark masses for which a non-relativistic approximation works in the temperature range considered is estimated, and charm quarks turn out to be a borderline case. Comparing with simulation data from fine lattices, we find good agreement in the vector channel but a substantial discrepancy in the scalar one. An explanation for the discrepancy is suggested in terms of physics of the quark-antiquark threshold region. Perturbative predictions for the bottom scalar spectral function around the threshold are also briefly reviewed.
Cite
@article{arxiv.1310.6124,
title = {Temporal mesonic correlators at NLO for any quark mass},
author = {Y. Burnier and M. Laine},
journal= {arXiv preprint arXiv:1310.6124},
year = {2013}
}
Comments
7 pages. To appear in the Proceedings of the 31st International Symposium on Lattice Field Theory, July 29 - August 3, 2013, Mainz, Germany