The transition temperature in QCD

By C. Schmidt, S. Datta, F. Karsch, C. Jung, P. Petreczky, T. Umeda, M. Cheng, N. Christ, R. Mawhinney, K. Petrov and 8 more. 2006

249 citations recorded by the source corpus.

We 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 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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/261a00215729e5e2bde6fad043fc7b39d942befa

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Citations in the corpus

The QCD transition temperature: Results with physical masses in the continuum limit (2006, methodology): “e use the renormalized chiral susceptibility with T4 normalization to obtain the peak position, which yields ∼ 9 MeV smaller critical temperature than the bare susceptibility normalized by T2 of Ref. [8]. Acknowledgment: We thank F. Csikor, J. Kuti and L. Lellouch for useful discussions. We thank P.”
Collective Phenomena in the Non-Equilibrium Quark-Gluon Plasma (2008, background): “Over the past few years, increasingly precise lattice calculations of thermal QCD, extrapolated to the continuum and thermodynamic limits and to small quark masses, have become available [26, 27, 28, 29, 30, 31, 32, 33, 34].”
A holographic critical point (2010, result): “small changes to our model could accomodate variations in the lattice results. 7 T c ˇ191MeV is somewhat larger than the value c 175MeV mentioned in section 1; however it is in line with estimates of [20]. Lower values for T care favored, for example, in [21, 22, 23]. We do not aim here to probe the”
The phase diagram of dense QCD (2010, background): “(2) 192(7)(4) MeV for 2 + 1 flavours in the p4fat3 staggered action with Nt up to 6 determined by χm and χL (where χL is the Polyakov loop susceptibility) [100].”
Thermodynamics of the brane (2007, background): “1Tdeconf [44], where Tdeconf ≃ 192 MeV is the QCD deconfinement temperature [15].”
Comparing the drag force on heavy quarks in N = 4 super-Yang-Mills theory and QCD (2006, result): “I have chosen a value in line with the recent work [16].”