Scaling behavior at the N{sub t}=6 chiral phase transition for 2-flavor lattice QCD with massless staggered quarks, and an irrelevant 4-fermion interaction
Journal Article
·
· Physical Review D
We have simulated lattice QCD with 2 flavors of massless staggered quarks. An irrelevant chiral 4-fermion interaction was added to the standard quark action to allow us to simulate at zero quark mass. Thermodynamics was studied on lattices of temporal extent 6. Clear evidence for a second order chiral transition was observed and the critical exponents {beta}{sub mag}, {delta}, {nu} and {gamma}{sub mag} were measured. These exponents do not agree with those expected by standard universality arguments. They are, however, consistent with tricritical behavior. The {pi} and {sigma} screening masses were measured and show clear evidence for chiral symmetry restoration at this transition.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 40277080
- Journal Information:
- Physical Review D, Vol. 64, Issue 3; Other Information: DOI: 10.1103/PhysRevD.64.034508; Othernumber: PRVDAQ000064000003034508000001; 059115PRD; PBD: 1 Aug 2001; ISSN 0556-2821
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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