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), J. Laiho (3), L. Levkova (4), J. Osborn (7), R. Sugar (8), D., Toussaint (2), ((1) Indiana University
TL;DR
This paper reports new calculations of the QCD equation of state at non-zero chemical potential using Taylor expansion, comparing results for different lattice spacings with improved quark actions.
Contribution
It provides the first detailed comparison of QCD thermodynamics at non-zero chemical potential for N_t=4 and N_t=6 lattice spacings using sixth-order Taylor expansion.
Findings
Results show consistency between N_t=4 and N_t=6 calculations.
The equation of state at non-zero chemical potential is characterized with improved accuracy.
The study advances understanding of QCD thermodynamics relevant for heavy-ion collisions.
Abstract
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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Taxonomy
TopicsHigh-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies