Minahan, Joseph A. (1999) Glueball mass spectra and other issues for supergravity duals of QCD models. Journal of High Energy Physics, 1999 (1). Art. No. 020. ISSN 1029-8479 http://resolver.caltech.edu/CaltechAUTHORS:20111208-093650137
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We derive WKB expressions for glueball masses of various finite temperature supergravity models. The results are very close to recent numerical computations. We argue that the spectra has some universality that depends only on the dimension of the AdS space and the singularity structure of the horizon. This explains the stability of the 0^(++) glueball mass ratios between various models. We also consider the recently proposed nonsupersymmetric model arising from the type 0 string. In the supergravity limit of this model, the heavy quark potential has an effective coupling with 1/(log u) behavior in the UV. Unfortunately, the supergravity solution implies that the heavy quark potential is still coulombic in the infrared, with an effective coupling of order 1. We also argue that the type 0 supergravity background solution does not have normalizable glueball solutions.
|Additional Information:||© 1999 IOP Publishing. Received 19 November 1998, accepted for publication 25 January 1999. Published 15 March 1999. I would like to thank O. Bergman, E. Gimon, P. Horava and D. Minic for discussions. This work was supported in part by funds provided by the DOE under grant number DE-FG03-92-ER40701.|
|Subject Keywords:||nonperturbative effects; 1/N expansion; brane dynamics in gauge theories|
|Classification Code:||PACS: 12.39.Mk; 04.65.+e; 12.38.-t; 12.39.Pn; 14.40.-n|
|Official Citation:||Glueball mass spectra and other issues for supergravity duals of QCD models Joseph A. Minahan JHEP01(1999)020|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||20 Dec 2011 23:04|
|Last Modified:||26 Dec 2012 14:35|
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