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Spectral functions, maximum entropy method and unconventional methods in lattice field theory / Danielle Blythe, Jonathan Clowser, Chris Allton

Nuclear Physics B - Proceedings Supplements, Volume: 109, Issue: 1, Pages: 192 - 196

Swansea University Author: Chris Allton

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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 t...

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Published in: Nuclear Physics B - Proceedings Supplements
ISSN: 09205632
Published: 2002
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URI: https://cronfa.swan.ac.uk/Record/cronfa28436
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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.
College: College of Science
Issue: 1
Start Page: 192
End Page: 196