Spectrum of Large N Gauge Theory from Supergravity

Details Spectrum of Large N Gauge Theory from Supergravity Spectrum of Large N Gauge Theory from Supergravity

1998-02-17

arxiv.org/abs/hep-th/9802116v4

Phys.Rev.Lett.80:4116-4118,1998

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, harvmac; final version to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.80.4116

Recently, Maldacena proposed that the large N limit of the N=4 supersymmetric gauge theory in four dimensions with U(N) gauge group is dual to the type IIB superstring theory on AdS_5 x S^5. We use this proposal to study the spectrum of the large N gauge theory on R x S^3 in a low energy regime. We find that the spectrum is discrete and evenly spaced, and the number of states at each energy level is smaller than the one predicted by the naive extrapolation of the Bekenstein-Hawking formula to the low energy regime. We also show that the gauge theory describes a region of spacetime behind the horizon as well as the region in front.

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