Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-06-15
Phys.Rev.D58:105009,1998
Physics
High Energy Physics
High Energy Physics - Theory
20 pages,Latex,3 figs,psfig.tex, added refs., minor changes
Scientific paper
10.1103/PhysRevD.58.105009
In 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 Cs\'aki et al., hep-th/9806021, which addresses the same problem.
Jevicki Antal
Mello Koch Robert de
Mihailescu Mihai
Nunes Joao P.
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