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arXiv · hep-lat/0202024

Spectral Functions, Maximum Entropy Method and Unconventional Methods in Lattice Field Theory

Chris Allton·Danielle Blythe·Jonathan Clowser
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Abstract

We present two unconventional methods of extracting information from hadronic 2-point functions produced by Monte Carlo simulations. The first is an extension of earlier work by Leinweber which combines a QCD Sum Rule approach with lattice data. The second uses the Maximum Entropy Method to invert the 2-point data to obtain estimates of the spectral function. The first approach is applied to QCD data, and the second method is applied to the Nambu--Jona-Lasinio model in (2+1)D. Both methods promise to augment the current approach where physical quantities are extracted by fitting to pure exponentials.

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Chris Allton, Danielle Blythe, Jonathan Clowser. 2002-04-26. Spectral Functions, Maximum Entropy Method and Unconventional Methods in Lattice Field Theory. https://doi.org/10.1016/s0920-5632(02)01414-7

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