Spectral Functions, Maximum Entropy Method and Unconventional Methods in Lattice Field Theory
High Energy Physics - Lattice
2009-11-07 v2
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.
Cite
@article{arxiv.hep-lat/0202024,
title = {Spectral Functions, Maximum Entropy Method and Unconventional Methods in Lattice Field Theory},
author = {Chris Allton and Danielle Blythe and Jonathan Clowser},
journal= {arXiv preprint arXiv:hep-lat/0202024},
year = {2009}
}
Comments
Paper presented at the Workshop on Lattice Hadron Physics, July 2001, Cairns, Australia. 5 pages. Minor spelling error corrected