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arXiv · hep-lat/9509093

The $N_t=6$ equation of state for two flavor QCD

C. Bernard·T. Blum·C. DeTar·Steven Gottlieb·U. M. Heller·J. E. Hetrick·L. Karkkainen·K. Rummukainen·R. Sugar·D. Toussaint·M. Wingate
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Abstract

We improve the calculation of the equation of state for two flavor QCD by simulating on $N_t=6$ lattices at appropriate values of the couplings for the deconfinement/chiral symmetry restoration crossover. For $am_q=0.0125$ the energy density rises rapidly to approximately 1 ${\rm GeV/fm^3}$ just after the crossover($m_π/m_ρ\approx 0.4$ at this point). Comparing with our previous result for $N_t=4$~\cite{eos}, we find large finite $N_t$ corrections as expected from free field theory on finite lattices. We also provide formulae for extracting the speed of sound from the measured quantities.

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C. Bernard, T. Blum, C. DeTar, Steven Gottlieb, U. M. Heller, J. E. Hetrick, L. Karkkainen, K. Rummukainen, R. Sugar, D. Toussaint, M. Wingate. 1995-09-29. The $N_t=6$ equation of state for two flavor QCD. https://doi.org/10.1016/0920-5632(96)00110-7

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