Spectral functions at small energies and the electrical conductivity in hot, quenched lattice QCD

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dc.creatorAarts, Gert
dc.creatorAllton, Chris
dc.creatorFoley, Justin
dc.creatorHands, Simon
dc.creatorKim, Seyong
dc.date2007-03-12
dc.date2007-06-08
dc.date.accessioned2026-07-07T13:02:34Z
dc.date.available2026-07-07T13:02:34Z
dc.descriptionIn lattice QCD, the Maximum Entropy Method can be used to reconstruct spectral functions from euclidean correlators obtained in numerical simulations. We show that at finite temperature the most commonly used algorithm, employing Bryan's method, is inherently unstable at small energies and give a modification that avoids this. We demonstrate this approach using the vector current-current correlator obtained in quenched QCD at finite temperature. Our first results indicate a small electrical conductivity above the deconfinement transition.
dc.description4 pages, v2: minor changes, footnote corrected, to appear in PRL
dc.identifierhttps://arxiv.org/abs/hep-lat/0703008
dc.identifierhttp://arxiv.org/abs/hep-lat/0703008
dc.identifierPhys.Rev.Lett.99:022002,2007
dc.identifierdoi:10.1103/PhysRevLett.99.022002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226491
dc.subjectHigh Energy Physics - Lattice
dc.subjectOther Condensed Matter
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.subjectNuclear Theory
dc.titleSpectral functions at small energies and the electrical conductivity in hot, quenched lattice QCD
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