QCD with dynamical Wilson fermions

We present results from a study of QCD with two flavors of Wilson fermions using the hybrid Monte Carlo algorithm, which incorporates the effects of fermion loops exactly. We evaluate the performance of the algorithm and its potential for large-scale computations. We argue that in the best case the...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 1989-09, Vol.40 (6), p.2072-2084
Main Authors: GUPTA, R, PATEL, A, BAILLIE, C. F, GURALNIK, G, KILCUP, G. W, SHARPE, S. R
Format: Article
Language:English
Subjects:
645204 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties
645400 - High Energy Physics- Field Theory
ALGORITHMS
Classical and quantum physics: mechanics and fields
COMPOSITE MODELS
CORRELATION FUNCTIONS
DIRAC OPERATORS
Exact sciences and technology
FERMIONS
FIELD THEORIES
FLAVOR MODEL
FUNCTIONS
HAMILTONIANS
INTERACTIONS
LATTICE FIELD THEORY
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MONTE CARLO METHOD
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTITION FUNCTIONS
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUANTUM OPERATORS
QUARK MODEL
QUARK-ANTIQUARK INTERACTIONS
Theory of quantized fields
WILSON LOOP
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present results from a study of QCD with two flavors of Wilson fermions using the hybrid Monte Carlo algorithm, which incorporates the effects of fermion loops exactly. We evaluate the performance of the algorithm and its potential for large-scale computations. We argue that in the best case the algorithm slows down as {ital V}{sup 5/4}m{sub q}{sup {minus}13/4} at a fixed gauge coupling. We present improved algorithms for calculating the inverse and the determinant of the Wilson fermion operator. Results for the finite-temperature transition on 4{times}6{sup 3} and 6{times}8{sup 3} lattices are presented at {beta}=5.2--5.6. We also give Wilson loop expectation values obtained on 8{sup 4} lattices at {beta}=5.3 for six values of {kappa}. The data show evidence for screening in the {ital q{bar q}} potential. Lastly, on comparing Wilson and staggered-fermion results we find that {beta}=5.3 is far from the scaling region.
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.40.2072