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

M. Oevers·C. Davies·J. Shigemitsu
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Abstract

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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M. Oevers, C. Davies, J. Shigemitsu. 2000-09-22. Towards the application of the Maximum Entropy Method to finite temperature Upsilon Spectroscopy. https://doi.org/10.1016/s0920-5632(01)00994-x

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