A Random Matrix Study of the QCD Sign Problem

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dc.creatorHan, J.
dc.creatorStephanov, M. A.
dc.date2008-05-14
dc.date.accessioned2026-07-07T12:27:22Z
dc.date.available2026-07-07T12:27:22Z
dc.descriptionWe investigate the severity of the sign problem in a random matrix model for QCD at finite temperature T and baryon chemical potential mu. We obtain analytic expression for the average phase factor -- the measure of the severity of the sign problem at arbitrary T and mu. We observe that the sign problem becomes less severe as the temperature is increased. We also find the domain where the sign problem is maximal -- the average phase factor is zero, which is related to the pion condensation phase in the QCD with finite isospin chemical potential. We find that, in the matrix model we studied, the critical point is located inside the domain of the maximal sign problem, making the point inaccessible to conventional reweighting techniques. We observe and describe the scaling behavior of the size and shape of the pion condensation near the chiral limit.
dc.description16 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0805.1939
dc.identifierhttp://arxiv.org/abs/0805.1939
dc.identifierPhys.Rev.D78:054507,2008
dc.identifierdoi:10.1103/PhysRevD.78.054507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215185
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA Random Matrix Study of the QCD Sign Problem
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