We consider all 1/2 BPS excitations of AdS × S configurations in both type IIB string theory and M-theory. In the dual field theories these excitations are described by free fermions. Configurations… (More)

We find the gravity dual of a marginal deformation of N = 4 super Yang Mills, and discuss some of its properties. This deformation is intimately connected with an SL(2, R) symmetry of the gravity… (More)

Near-extremal black holes are obtained by exciting the Ramond sector of the D1-D5 CFT, where the ground state is highly degenerate. We find that the dual geometries for these ground states have… (More)

For the two-charge extremal holes in string theory we show that the Bekenstein entropy obtained from the area of the stretched horizon has a statistical interpretation as a "coarse graining entropy":… (More)

We consider a string wrapped many times around a compact circle in space, and let this string carry a right moving wave which imparts momentum and angular momentum to the string. The angular momentum… (More)

We present a class of black string spacetimes which asymptote to maximally symmetric plane wave geometries. Our construction will rely on a solution generating technique, the null Melvin twist, which… (More)

We develop a method for computing correlation functions of twist operators in the bosonic 2-d CFT arising from orbifolds M/SN , where M is an arbitrary manifold. The path integral with twist… (More)

The D1-D5 system is believed to have an ‘orbifold point’ in its moduli space where its low energy theory is a N = 4 supersymmetric sigma model with target space MN/SN , where M is T 4 or K3. We study… (More)

In the AdS/CFT correspondence a chiral primary is described by a supergravity solution with mass equaling angular momentum. For AdS3 × S3 we are led to consider three special families of metrics with… (More)

Non(anti)commutative gauge theories are supersymmetric Yang-Mills and matter system defined on a deformed superspace whose coordinates obey non(anti)commutative algebra. We prove that these theories… (More)