Conventional wisdom states that Newton's force law implies only four noncompact
dimensions. We demonstrate that this is not necessarily true in the presence of a …

Following a recent suggestion by Randall and Sundrum, we consider string compactification
scenarios in which a compact slice of AdS-space arises as a subspace of the …

We construct dual Type I'string descriptions to five dimensional supersymmetric fixed points
with ENf+ 1 global symmetry. The background is obtained as the near horizon geometry of …

We present a new compactification of chiral, N= 2 ten-dimensional supergravity down to five
dimensions and show that it corresponds to the N= 2 supersymmetric critical point of five …

We present theories of N= 2 hypermultiplets in four space-time dimensions that are invariant
under rigid or local superconformal symmetries. The target spaces of theories with rigid …

A key open problem in M-theory is to explain the mechanism of “gauge enhancement”
through which M-branes exhibit the nonabelian gauge degrees of freedom seen …

We have studied the scalar perturbation of static charged dilaton black holes in 2+ 1
dimensions. The black hole considered here is a solution to the low-energy string theory in …

We construct simple twistor-like actions describing superparticles propagating on a coset
superspace OSp (1| 4)/SO (1, 3)(containing the D= 4 anti–de Sitter space as a bosonic …

We address the problem of computing scattering amplitudes related to the correlation
function of two Wilson lines and/or loops elongated along light-cone directions in strongly …

We give an elementary introduction to black holes in supergravity and string theory. The
focus is on the role of BPS solutions in four-and higher-dimensional supergravity and in …