TY - JOUR
T1 - Equation of state for two flavor QCD at [Formula presented]
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 - 1997
Y1 - 1997
N2 - We calculate the two flavor equation of state for QCD on lattices with lattice spacing [Formula presented] and find that cutoff effects are substantially reduced compared to an earlier study using [Formula presented]. 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 [Formula presented] 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 [Formula presented] and find that cutoff effects are substantially reduced compared to an earlier study using [Formula presented]. 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 [Formula presented] and to extract the speed of sound. We find that the equation of state depends weakly on the quark mass for small quark mass.
UR - https://www.scopus.com/pages/publications/0001531591
UR - https://www.scopus.com/pages/publications/0001531591#tab=citedBy
U2 - 10.1103/PhysRevD.55.6861
DO - 10.1103/PhysRevD.55.6861
M3 - Article
SN - 1550-7998
VL - 55
SP - 6861
EP - 6869
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
ER -