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Phys. Rev. D 44, 2869–2878 (1991)

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

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J. B. Kogut
Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801

D. K. Sinclair
Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439

M. Teper
All Souls College and Department of Theoretical Physics, University of Oxford, Oxford OX1 3NP United Kingdom

Received 18 March 1991; published in the issue dated 1 November 1991

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 10320 lattices at β=1.975) we find the following mass ratios: mG(0+)/mρ=1.1(2), mG(0+)/√κ=2.8(5), κ/mρ=0.39(3), mG(2+)/mG(0+)=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.

© 1991 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.44.2869
DOI:
10.1103/PhysRevD.44.2869
PACS: