Hadronic Spectral Functions above the QCD Phase Transition
High Energy Physics - Lattice
2009-11-07 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We extract the spectral functions in the scalar, pseudo-scalar, vector, and axial vector channels above the deconfinement phase transition temperature (Tc) using the maximum entropy method (MEM). We use anisotropic lattices, 32^3 * 32, 40, 54, 72, 80, and 96 (corresponding to T = 2.3 Tc --> 0.8 Tc), with the renormalized anisotropy xi = 4.0 to have enough temporal data points to carry out the MEM analysis. Our result suggests that the spectral functions continue to possess non-trivial structures even above Tc and in addition that there is a qualitative change in the state of the deconfined matter between 1.5 Tc and 2 Tc.
Cite
@article{arxiv.hep-lat/0208059,
title = {Hadronic Spectral Functions above the QCD Phase Transition},
author = {M. Asakawa and T. Hatsuda and Y. Nakahara},
journal= {arXiv preprint arXiv:hep-lat/0208059},
year = {2009}
}
Comments
3 pages, 4 figures, Lattice2002(nonzerot)