Towards the application of the Maximum Entropy Method to finite temperature Upsilon Spectroscopy

Details Towards the application of the Maximum Entropy Method to finite temperature Upsilon Spectroscopy Towards the application of the Maximum Entropy Method to finite temperature Upsilon Spectroscopy

2000-09-22

arxiv.org/abs/hep-lat/0009031v1

Nucl.Phys.Proc.Suppl. 94 (2001) 423-426

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice 2000 (Finite Temperature)

Scientific paper

10.1016/S0920-5632(01)00994-X

According to the Narnhofer Thirring Theorem interacting systems at finite temperature cannot be described by particles with a sharp dispersion law. It is therefore mandatory to develop new methods to extract particle masses at finite temperature. The Maximum Entropy method offers a path to obtain the spectral function of a particle correlation function directly. We have implemented the method and tested it with zero temperature Upsilon correlation functions obtained from an NRQCD simulation. Results for different smearing functions are discussed.

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