QCD with chiral 4-fermion interactions ({chi}QCD)

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:392755

Kogut, J B ^[1]; Sinclair, D K ^[2]

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1. Illinois Univ., Urbana, IL (United States). Dept. of Physics
2. Argonne National Lab., IL (United States)

Lattice QCD with staggered quarks is augmented by the addition of a chiral 4-fermion interaction. The Dirac operator is now non-singular at m{sub q}=0, decreasing the computing requirements for light quark simulations by at least an order of magnitude. We present preliminary results from simulations at finite and zero temperatures for m{sub q}=0, with and without gauge fields. Chiral QCD enables simulations at physical u and d quark masses with at least an order of magnitude saving in CPU time. It also enables simulations with zero quark masses which is important for determining the equation of state. A renormalization group analysis will be needed to continue to the continuum limit. 7 refs., 2 figs.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 392755
• Report Number(s): ANL-HEP-CP-96-55; CONF-9606278-3; ON: DE96013959; CNN: Grant NSF-PHY92-00148; TRN: 96:029198
• Resource Relation: Conference: 14. international symposium on lattice field theory, St. Louis, MO (United States), 4-8 Jun 1996; Other Information: PBD: [1996]
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
QUANTUM CHROMODYNAMICS
LATTICE FIELD THEORY
FERMI INTERACTIONS
CHIRAL SYMMETRY
GAUGE INVARIANCE