Hadronic Spectral Functions above the QCD Phase Transition

Details Hadronic Spectral Functions above the QCD Phase Transition Hadronic Spectral Functions above the QCD Phase Transition

2002-08-27

arxiv.org/abs/hep-lat/0208059v1

Nucl.Phys. A715 (2003) 863-866; Nucl.Phys.Proc.Suppl. 119 (2003) 481-483

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 4 figures, Lattice2002(nonzerot)

Scientific paper

10.1016/S0920-5632(03)01559-7

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.

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