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29 March 2024
 
  » arxiv » hep-th/9806125

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Evaluation Of Glueball Masses From Supergravity
R.de Mello Koch ; A.Jevicki ; M.Mihailescu ; J.P.Nunes ;
Date 16 Jun 1998
Journal Phys.Rev. D58 (1998) 105009
Subject hep-th
AbstractIn the framework of the conjectured duality relation between large $N$ gauge theory and supergravity the spectra of masses in large $N$ gauge theory can be determined by solving certain eigenvalue problems in supergravity. In this paper we study the eigenmass problem given by Witten as a possible approximation for masses in QCD without supersymmetry. We place a particular emphasis on the treatment of the horizon and related boundary conditions. We construct exact expressions for the analytic expansions of the wave functions both at the horizon and at infinity and show that requiring smoothness at the horizon and normalizability gives a well defined eigenvalue problem. We show for example that there are no smooth solutions with vanishing derivative at the horizon. The mass eigenvalues up to $m^{2}=1000$ corresponding to smooth normalizable wave functions are presented. We comment on the relation of our work with the results found in a recent paper by Csáki et al., hep-th/9806021, which addresses the same problem.
Source arXiv, hep-th/9806125
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