Perturbative thermodynamics of lattice QCD with chiral-invariant four-fermion interactions

Journal Article · Thu Oct 01 00:00:00 EDT 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.58.074503· OSTI ID:658519

Chavel, M ^[1]

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1. Center for Theoretical Physics, Laboratory for Nuclear Science, and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)

Lattice QCD with additional chiral-invariant four-fermion interactions is studied at nonzero temperature. Staggered Kogut-Susskind quarks are used. The four-fermion interactions are implemented by introducing bosonic auxiliary fields. A mean field treatment of the auxiliary fields is used to calculate the model{close_quote}s asymptotic scale parameter and perturbative thermodynamics, including the one-loop gluonic contributions to the energy, entropy, and pressure. In this approach the calculations reduce to those of ordinary lattice QCD with massive quarks. Hence, the previous calculations of these quantities in lattice QCD using massless quarks are generalized to the massive case. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 658519
• Journal Information: Physical Review, D, Vol. 58, Issue 7; Other Information: PBD: Oct 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
LATTICE FIELD THEORY
CHIRAL SYMMETRY
QUARKS
FERMI INTERACTIONS
THERMODYNAMICS
GLUONS
PHASE TRANSFORMATIONS