Equation of state for two flavor QCD at Nt=6

Claude Bernard; Tom Blum; Carleton DeTar; Steven Gottlieb; Kari Rummukainen; Urs M. Heller; James E. Hetrick; Doug Toussaint; Leo Kärkkäinen; R. L. Sugar; Matthew Wingate

Equation of state for two flavor QCD at N_t=6

Claude Bernard, Tom Blum, Carleton DeTar, Steven Gottlieb, Kari Rummukainen, Urs M. Heller, James E. Hetrick, Doug Toussaint, Leo Kärkkäinen, R. L. Sugar, Matthew Wingate

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We calculate the two flavor equation of state for QCD on lattices with lattice spacing a = (6T)^-1 and find that cutoff effects are substantially reduced compared to an earlier study using a = (4T)^-1. However, it is likely that significant cutoff effects remain. We fit the lattice data to expected forms of the free energy density for a second order phase transition at zero-quark mass, which allows us to extrapolate the equation of state to m_q=0 and to extract the speed of sound. We find that the equation of state depends weakly on the quark mass for small quark mass.

Original language	English (US)
Pages (from-to)	6861-6869
Number of pages	9
Journal	Physical Review D
Volume	61
Issue number	3
State	Published - 2000

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Cite this

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title = "Equation of state for two flavor QCD at Nt=6",

abstract = "We calculate the two flavor equation of state for QCD on lattices with lattice spacing a = (6T)-1 and find that cutoff effects are substantially reduced compared to an earlier study using a = (4T)-1. However, it is likely that significant cutoff effects remain. We fit the lattice data to expected forms of the free energy density for a second order phase transition at zero-quark mass, which allows us to extrapolate the equation of state to mq=0 and to extract the speed of sound. We find that the equation of state depends weakly on the quark mass for small quark mass.",

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T1 - Equation of state for two flavor QCD at Nt=6

AU - Bernard, Claude

AU - Blum, Tom

AU - DeTar, Carleton

AU - Gottlieb, Steven

AU - Rummukainen, Kari

AU - Heller, Urs M.

AU - Hetrick, James E.

AU - Toussaint, Doug

AU - Kärkkäinen, Leo

AU - Sugar, R. L.

AU - Wingate, Matthew

PY - 2000

Y1 - 2000

N2 - We calculate the two flavor equation of state for QCD on lattices with lattice spacing a = (6T)-1 and find that cutoff effects are substantially reduced compared to an earlier study using a = (4T)-1. However, it is likely that significant cutoff effects remain. We fit the lattice data to expected forms of the free energy density for a second order phase transition at zero-quark mass, which allows us to extrapolate the equation of state to mq=0 and to extract the speed of sound. We find that the equation of state depends weakly on the quark mass for small quark mass.

AB - We calculate the two flavor equation of state for QCD on lattices with lattice spacing a = (6T)-1 and find that cutoff effects are substantially reduced compared to an earlier study using a = (4T)-1. However, it is likely that significant cutoff effects remain. We fit the lattice data to expected forms of the free energy density for a second order phase transition at zero-quark mass, which allows us to extrapolate the equation of state to mq=0 and to extract the speed of sound. We find that the equation of state depends weakly on the quark mass for small quark mass.

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M3 - Article

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JO - Physical Review D

JF - Physical Review D

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ER -

Equation of state for two flavor QCD at N_t=6

Abstract

ASJC Scopus subject areas

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