arxiv: 0910.0276 · v1 · submitted 2009-10-01 · ✦ hep-lat

QCD equation of state at non-zero chemical potential

The MILC Collaboration: S. Basak (1) , A. Bazavov (2) , C. Bernard (3) , C. DeTar (4) , W. Freeman (2) , Steven Gottlieb (1) , U.M. Heller (5) , J.E. Hetrick (6)

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J. Laiho (3) L. Levkova (4) J. Osborn (7) R. Sugar (8) D. Toussaint (2) ((1) Indiana University (2) University of Arizona (3) Washington University (4) University of Utah (5) American Physical Society (6) University of the Pacific (7) Argonne National Laboratory (8) University of California Santa Barbara)

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keywords chemicalequationpotentialstatealongapproximatelyasqtadcompare

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We present our new results for the QCD equation of state at nonzero chemical potential at N_t=6 and compare them with N_t=4. We use the Taylor expansion method with terms up to sixth order in simulations with 2+1 flavors of improved asqtad quarks along a line of constant physics with m_l=0.1 m_s and approximately physical strange quark mass m_s.

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QCD equation of state at non-zero chemical potential

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