Two-flavor staggered fermion thermodynamics at {ital N}{sub {ital t}}=12
- Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)
- Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
- Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)
- Indiana University, Bloomington, Indiana 47405 (United States)
- SCRI, The Florida State University, Tallahassee, Florida 32306-4052 (United States)
- Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)
- Department of Physics, University of California, Santa Barbara, California 93106 (United States)
We present results of an ongoing study of the nature of the high temperature crossover in QCD with two light fermion flavors. These results are obtained with the conventional staggered fermion action at the smallest lattice spacing to date, approximately 0.1 fm. Of particular interest are (1) a study of the temperature of the crossover, an important indicator of continuum scaling, (2) a determination of the induced baryon charge and baryon susceptibility, used to study the dissolution of hadrons at the crossover, (3) the scalar susceptibility, a signal for the appearance of soft modes, and (4) the chiral order parameter, used to test models of critical behavior associated with chiral symmetry restoration. From our new data and published results for {ital N}{sub {ital t}}=4, 6, and 8, we determine the QCD magnetic equation of state from the chiral order parameter using O(4) and mean field critical exponents and compare it with the corresponding equation of state obtained from an O(4) spin model and mean field theory. We also present a scaling analysis of the Polyakov loop, suggesting a temperature-dependent {open_quote}{open_quote}constituent quark free energy.{close_quote}{close_quote} {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383933
- Journal Information:
- Physical Review, D, Vol. 54, Issue 7; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
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