Numerical study of QCD with eight and two quark flavors. [QCD (quantum chromodynamics)]

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1993

OSTI ID:6973756

Dong, Z

Eight flavor QCD is studied on 16[sup 3] x N[sub t], lattices with n[sub t] = 4, 6, 8, 16 and 32. A dynamical quark of mass ma = 0.015 is used in the simulation. A strong, first order chiral symmetry restoring phase transition is seen at N[sub t] = 4, 6, and 8 with different [beta][sub c]. However, [beta][sub c] becomes independent of N[sub t] when N[sub t] [>=] 8, indicating a bulk or zero temperature phase transition. The chiral properties of weak-coupling side of the bulk transition are unclear. The calculation results offer a hint of a normal, finite temperature chiral symmetry breaking transition in the weak coupling side. In two flavor lattice QCD simulation, f[sub [pi]] is calculated from the correlation of the divergence of the lattice axial current, which agrees with the result calculated from the PCAC assumption.

• Research Organization: Columbia Univ., New York, NY (United States)
• OSTI ID: 6973756
• Country of Publication: United States
• Language: English

Related Subjects

662230* -- Quantum Chromodynamics-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
COMPOSITE MODELS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FLAVOR MODEL
LATTICE FIELD THEORY
MATHEMATICAL MODELS
MATHEMATICS
NUMERICAL ANALYSIS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SYMMETRY