The transition temperature in QCD

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dc.creatorCheng, M.
dc.creatorChrist, N. H.
dc.creatorDatta, S.
dc.creatorvan der Heide, J.
dc.creatorJung, C.
dc.creatorKarsch, F.
dc.creatorKaczmarek, O.
dc.creatorLaermann, E.
dc.creatorMawhinney, R. D.
dc.creatorMiao, C.
dc.creatorPetreczky, P.
dc.creatorPetrov, K.
dc.creatorSchmidt, C.
dc.creatorUmeda, T.
dc.date2006-08-22
dc.date2006-09-13
dc.date.accessioned2026-07-07T10:41:13Z
dc.date.available2026-07-07T10:41:13Z
dc.descriptionWe present a detailed calculation of the transition temperature in QCD with two light and one heavier (strange) quark mass on lattices with temporal extent N_t =4 and 6. Calculations with improved staggered fermions have been performed for various light to strange quark mass ratios in the range, 0.05 <= m_l/m_s <= 0.5, and with a strange quark mass fixed close to its physical value. From a combined extrapolation to the chiral (m_l -> 0) and continuum (aT = 1/N_t -> 0) limits we find for the transition temperature at the physical point T_c r_0 = 0.457(7) where the scale is set by the Sommer-scale parameter r_0 defined as the distance in the static quark potential at which the slope takes on the value, (dV_qq(r)/dr)_r=r_0 = 1.65/r_0^2. Using the currently best known value for r_0 this translates to a transition temperature T_c = 192(7)(4)MeV. The transition temperature in the chiral limit is about 3% smaller. We discuss current ambiguities in the determination of T_c in physical units and also comment on the universal scaling behavior of thermodynamic quantities in the chiral limit.
dc.description18 pages, 14 EPS figures, replaced wrong entries in column 7 of Table A.7
dc.identifierhttps://arxiv.org/abs/hep-lat/0608013
dc.identifierhttp://arxiv.org/abs/hep-lat/0608013
dc.identifierPhys.Rev.D74:054507,2006
dc.identifierdoi:10.1103/PhysRevD.74.054507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181561
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleThe transition temperature in QCD
dc.typetext

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