Meson Spectral Functions at finite Temperature

Details Meson Spectral Functions at finite Temperature Meson Spectral Functions at finite Temperature

2001-10-16

arxiv.org/abs/hep-lat/0110132v1

Nucl.Phys.Proc.Suppl. 106 (2002) 510-512

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2001(hightemp), 3 pages, 6 figures

Scientific paper

The Maximum Entropy Method provides a Bayesian approach to reconstruct the spectral functions from discrete points in Euclidean time. The applicability of the approach at finite temperature is probed with the thermal meson correlation function. Furthermore the influence of fuzzing/smearing techniques on the spectral shape is investigated. We present first results for meson spectral functions at several temperatures below and above $T_c$. The correlation functions were obtained from quenched calculations with Clover fermions on large isotropic lattices of the size $(24-64)^3 \times 16$. We compare the resulting pole masses with the ones obtained from standard 2-exponential fits of spatial and temporal correlation functions at finite temperature and in the vacuum. The deviation of the meson spectral functions from free spectral functions is examined above the critical temperature.

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