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Glueballs vs. Gluinoballs: Fluctuation Spectra in Non-AdS/Non-CFT | | Marcus Berg
; Michael Haack
; Wolfgang Muck
; | | Date: |
20 Dec 2006 | | Abstract: | Building on earlier results on holographic bulk dynamics in confining gauge theories, we compute the spin-0 and spin-2 spectra of gauge theories dual to the non-singular Maldacena-Nunez and Klebanov-Strassler supergravity backgrounds. We construct and apply a numerical recipe for computing mass spectra in terms of certain determinants. In the Klebanov-Strassler case, states containing the glueball and gluinoball obey "quadratic confinement", i.e. their mass-squareds depend on consecutive number as m^2 ~ n^2 for large n, with a universal proportionality constant. The hardwall approximation appears to work poorly when compared to the unique spectra we find in the full theory with a smooth cap-off in the infrared. | | Source: | arXiv, hep-th/0612224 | | Services: | Forum | Review | PDF | Favorites | |
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