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We propose a new higher-dimensional mechanism for solving the hierarchy problem. The weak scale is generated from a large scale of order the Planck scale through an exponential hierarchy. However, this exponential arises not from gauge interactions but from the background metric (which is a slice of AdS 5 spacetime). This mechanism relies on the existence… (More)

Conventional wisdom states that Newton's force law implies only four non-compact dimensions. We demonstrate that this is not necessarily true in the presence of a non-factorizable background geometry. The specific example we study is a single 3-brane embedded in five dimensions. We show that even without a gap in the Kaluza-Klein spectrum, four-dimensional… (More)

- Petr Hořava, Joseph Henry
- 1995

We propose that the ten-dimensional E 8 × E 8 heterotic string is related to an eleven-dimensional theory on the orbifold R 10 × S 1 /Z 2 in the same way that the Type IIA string in ten dimensions is related to R 10 × S 1. This in particular determines the strong coupling behavior of the ten-dimensional E 8 × E 8 theory. It also leads to a plausible… (More)

- S. S. Gubser, I. R. Klebanov, A. M. Polyakov, Joseph Henry
- 2002

A world-sheet sigma model approach is applied to string theories dual to four-dimensional gauge theories, and semi-classical soliton solutions representing highly excited string states are identified which correspond to gauge theory operators with relatively small anomalous dimensions. The simplest class of such states are strings on the leading Regge… (More)

- Petr Hořava, Joseph Henry
- 1996

In this paper, we present a systematic analysis of eleven-dimensional supergravity on a manifold with boundary, which is believed to be relevant to the strong coupling limit of the E 8 ×E 8 heterotic string. Gauge and gravitational anomalies enter at a very early stage, and require a refinement of the standard Green-Schwarz mechanism for their cancellation.… (More)

- Erik Verlinde, Joseph Henry
- 2000

The holographic principle is studied in the context of a n + 1 dimensional radiation dominated closed Friedman-Robertson-Walker (FRW) universe. The radiation is represented by a conformal field theory with a large central charge. Following recent ideas on holography, it is argued that the entropy density in the early universe is bounded by a multiple of the… (More)

- Robbert Dijkgraaf, Herman Verlinde, Joseph Henry, Erik Verlinde
- 1991

We consider string theory in the background of the two-dimensional black hole as described by the SL(2, R)/U (1) coset theory recently introduced by Witten. We study the spectrum of this conformal field theory, and give explicit representations for the tachyon vertex operators in terms of SL(2, R) matrix elements. This is used to compute the scattering of… (More)

- Steven S. Gubser, Joseph Henry, Igor R. Klebanov, Arkady A. Tseytlin
- 1998

The free energy of the maximally supersymmetric SU(N) gauge theory at temperature T is expected to scale, in the large N limit, as N 2 T 4 times a function of the 't Hooft coupling, f (g 2 YM N). In the strong coupling limit the free energy has been deduced from the near-extremal 3-brane geometry, and its normalization has turned out to be 3/4 times that… (More)

The partition function of two dimensional QCD on a Riemann surface of area A is expanded as a power series in 1/N and A. It is shown that the coefficients of this expansion are precisely determined by a sum over maps from a two dimensional surface onto the two dimensional target space. Thus two dimensional QCD has a simple interpretation as a closed string… (More)

The AdS/CFT correspondence and a classical test string approximation are used to calculate the drag force on an external quark moving in a thermal plasma of N = 4 super-Yang-Mills theory. This computation is motivated by the phenomenon of jet-quenching in relativistic heavy ion collisions.