Peter Petreczky
Brookhaven National Laboratory
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Featured researches published by Peter Petreczky.
Physical Review D | 2012
A. Bazavov; Tanmoy Bhattacharya; Michael Cheng; Carleton DeTar; Hengtong Ding; Steven Gottlieb; R. Gupta; Prasad Hegde; U. M. Heller; Frithjof Karsch; Edwin Laermann; L. Levkova; Swagato Mukherjee; Peter Petreczky; C. Schmidt; R. A. Soltz; W. Soeldner; R. L. Sugar; D. Toussaint; Wolfgang Unger; Pavlos Vranas
We present results on the chiral and deconfinement properties of the QCD transition at finite temperature. Calculations are performed with 2 + 1 flavors of quarks using the p4, asqtad, and HISQ/tree actions. Lattices with temporal extent N-tau = 6, 8, and 12 are used to understand and control discretization errors and to reliably extrapolate estimates obtained at finite lattice spacings to the continuum limit. The chiral transition temperature is defined in terms of the phase transition in a theory with two massless flavors and analyzed using O(N) scaling fits to the chiral condensate and susceptibility. We find consistent estimates from the HISQ/tree and asqtad actions and our main result is T-c = 154 +/- 9 MeV.
Physical Review D | 2009
A. Bazavov; Tanmoy Bhattacharya; Michael Cheng; Norman H. Christ; Carleton DeTar; S. Ejiri; Steven Gottlieb; R. Gupta; U. M. Heller; Kay Huebner; Chulwoo Jung; Frithjof Karsch; Edwin Laermann; L. Levkova; C. Miao; Robert D. Mawhinney; Peter Petreczky; Christian Schmidt; R. A. Soltz; W. Soeldner; R. L. Sugar; D. Toussaint; Pavlos Vranas
We calculate the equation of state in
Physical Review D | 2004
Saumen Datta; Frithjof Karsch; Peter Petreczky; I. Wetzorke
2+1
Nuclear Physics | 2010
Pasi Huovinen; Peter Petreczky
flavor QCD at finite temperature with physical strange quark mass and almost physical light quark masses using lattices with temporal extent
Physical Review D | 2006
M. Cheng; Norman H. Christ; S. Datta; J. van der Heide; Chulwoo Jung; Frithjof Karsch; Olaf Kaczmarek; Edwin Laermann; Robert D. Mawhinney; C. Miao; Peter Petreczky; K. Petrov; Christian Schmidt; T. Umeda
{N}_{\ensuremath{\tau}}=8
Physical Review D | 2008
Nora Brambilla; Jacopo Ghiglieri; Antonio Vairo; Peter Petreczky
. Calculations have been performed with two different improved staggered fermion actions, the asqtad and p4 actions. Overall, we find good agreement between results obtained with these two
Physical Review D | 2009
M. Cheng; P. Hegde; Chulwoo Jung; Frithjof Karsch; Olaf Kaczmarek; Edwin Laermann; Robert D. Mawhinney; C. Miao; Peter Petreczky; Christian Schmidt; W. Soeldner
O({a}^{2})
Physical Review Letters | 2007
Agnes Mocsy; Peter Petreczky
improved staggered fermion discretization schemes. A comparison with earlier calculations on coarser lattices is performed to quantify systematic errors in current studies of the equation of state. We also present results for observables that are sensitive to deconfining and chiral aspects of the QCD transition on
Physical Review D | 2010
Michael Cheng; S. Ejiri; P. Hegde; Frithjof Karsch; Olaf Kaczmarek; Edwin Laermann; Robert D. Mawhinney; C. Miao; Swagato Mukherjee; Peter Petreczky; Christian Schmidt; W. Soeldner
{N}_{\ensuremath{\tau}}=6
Physical Review D | 2012
A. Bazavov; Tanmoy Bhattacharya; Carleton DeTar; Hengtong Ding; Steven Gottlieb; Rajan Gupta; Prasad Hegde; U. M. Heller; Frithjof Karsch; Edwin Laermann; L. Levkova; Swagato Mukherjee; Peter Petreczky; Christian Schmidt; R. A. Soltz; W. Soeldner; R. L. Sugar; Pavlos Vranas
and 8 lattices. We find that deconfinement and chiral symmetry restoration happen in the same narrow temperature interval. In an appendix we present a simple parametrization of the equation of state that can easily be used in hydrodynamic model calculations. In this parametrization we include an estimate of current uncertainties in the lattice calculations which arise from cutoff and quark mass effects.
