Finite size scaling and low mass glueballs |
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Authors: | Richard C. Brower Michael Creutz Michael Nauenberg |
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Affiliation: | Physics Department, University of California, Santa Cruz, CA 95064, USA;Brookhaven National Lab., Upton, Long Island, NY 11973, USA;Institute for Theoretical Physics, University of California, Santa Barbara, CA 92106, USA |
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Abstract: | We propose finite lattice effects as a probe of the glueball mass spectrum, and give an analysis of the recent SU(2) Monte Carlo data of Brower, Nauenberg and Schalk in terms of a gas of free glueballs. For L4 lattices with L = 4, 5, 6 fits are made to ξ(m = 1/aξ) which indicate a rather large effective number of degrees of freedom (i.e. statistical degeneracy where a spin J counts as 2J + 1) from 5 to 15 states. As the degeneracy is increased, the central glueball mass increases from at degeneracy 5 to about at degeneracy 15, relative to the SU(2) string tension . |
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