The QCD thermal phase transition in the presence of a small chemical potential

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dc.creatorAllton, C. R.
dc.creatorEjiri, S.
dc.creatorHands, S. J.
dc.creatorKaczmarek, O.
dc.creatorKarsch, F.
dc.creatorLaermann, E.
dc.creatorSchmidt, Ch.
dc.creatorScorzato, L.
dc.date2002-04-09
dc.date2002-09-02
dc.date.accessioned2026-07-07T10:51:57Z
dc.date.available2026-07-07T10:51:57Z
dc.descriptionWe propose a new method to investigate the thermal properties of QCD with a small quark chemical potential $μ$. Derivatives of the phase transition point with respect to $μ$ are computed at $μ=0$ for 2 flavors of p-4 improved staggered fermions with $ma=0.1,0.2$ on a $16^3\times4$ lattice. The resulting Taylor expansion is well behaved for the small values of $μ_{\rm q}/T_c\sim0.1$ relevant for RHIC phenomenology, and predicts a critical curve $T_c(μ)$ in reasonable agreement with estimates obtained using exact reweighting. In addition, we contrast the case of isoscalar and isovector chemical potentials, quantify the effect of $μ\not=0$ on the equation of state, and comment on the complex phase of the fermion determinant in QCD with $μ\not=0$.
dc.description26 pages, 25 figures, minor modification
dc.identifierhttps://arxiv.org/abs/hep-lat/0204010
dc.identifierhttp://arxiv.org/abs/hep-lat/0204010
dc.identifierPhys.Rev.D66:074507,2002
dc.identifierdoi:10.1103/PhysRevD.66.074507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184995
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleThe QCD thermal phase transition in the presence of a small chemical potential
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