### Abstract

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.

Original language | English (US) |
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Pages (from-to) | 6861-6869 |

Number of pages | 9 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 55 |

Issue number | 11 |

DOIs | |

State | Published - Jan 1 1997 |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

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## Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*55*(11), 6861-6869. https://doi.org/10.1103/PhysRevD.55.6861