Glueballs, mesons, and the string tension: An exploratory study of lattice QCD with two colors and four light flavors

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.44.2869· OSTI ID:6258807

Kogut, J B ^[1]; Sinclair, D K ^[2]; Teper, M ^[3]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois (USA)
2. Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois (USA)
3. University of Oxford, Department of Theoretical Physics, Oxford OX13NP (United Kingdom)

We calculate various meson and glueball masses in the version of lattice QCD with two colors and four (light) flavors. We do so both in the chirally symmetric and in the spontaneously broken phases. In the spontaneously broken phase (performed on 10{sup 3}20 lattices at {beta}=1.975) we find the following mass ratios: {ital m}{sub {ital G}}(0{sup +})/{ital m}{sub {rho}}=1.1(2), {ital m}{sub {ital G}}(0{sup +})/ {radical}{kappa} =2.8(5), {radical}{kappa} /{ital m}{sub {rho}}=0.39(3), m{sub G}(2{sup +})/m{sub G}(0{sup +})=1.7(5). In the small-spatial-volume, chirally symmetric phase we explicitly observe parity doubling among the mesons but not among the glueballs. All these calculations are exploratory for a variety of reasons which we discuss.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6258807
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 44:9; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110 -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662440* -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGORITHMS
BOSONS
CHIRAL SYMMETRY
COLOR MODEL
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FIELD THEORIES
FLAVOR MODEL
FUNCTIONS
GLUEBALLS
HADRONS
LATTICE FIELD THEORY
LIE GROUPS
MASS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
REST MASS
STRING MODELS
SU GROUPS
SU-2 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
WAVE FUNCTIONS