Calibration technology provides us with a fast and elegant way to find the supergravity solutions for BPS wrapped M-branes. Its true potential had however remained untapped due to the absence of a classification of calibrations in spacetimes with non-trivial flux. The applications of this method were thus limited in practise to M-branes wrapping Kahler calibrated cycles. In this paper, we catag...

We discuss the supergravity couplings of noncommutative D-branes by considering the disk amplitudes with one closed string insertion. The result confirms a recent proposal for the general form of the noncommutative Yang-Mills operators coupling to the massless closed string modes. The construction involves smearing Yang-Mills field variables along an open Wilson line. For multiple D-branes inte...

The standard eleven-dimensional supergravity action depends on a three-form gauge field and does not allow direct coupling to five-branes. Using previously developed methods, we construct a covariant eleven-dimensional supergravity action depending on a three-form and six-form gauge field in a duality-symmetric manner. This action is coupled to both the M–theory two-brane and five-brane, and co...

Deformations of maximal supergravity theories induced by gauging non-abelian subgroups of the duality group reveal the presence of charged M-theory degrees of freedom that are not necessarily contained in supergravity. The relation with Mtheory degrees of freedom is confirmed by the representation assignments under the duality group of the gauge charges and the ensuing vector and tensor gauge f...

We consider giant gravitons as probes of a class of ten-dimensional solutions of type IIB supergravity which arise as lifts of solutions of U(1)3 gauged N = 2 supergravity in five-dimensions. Surprisingly it is possible to solve exactly for minimum energy configurations of these spherical D3-brane probes in the compact directions, even in backgrounds which preserve no supersymmetry. The branes ...

Gauged supergravities (in four and five dimensions) with eight supercharges and with vector supermultiplets have a unique ultra-violet (UV) fixed point on a given physical domain M of the space of the scalar fields. We show that in these models the infra-red (IR) fixed points are located on the boundary of M, where the space-time metric becomes singular. e-mail: [email protected] e-mai...

We develop a procedure to reproduce the ten-dimensional generalized supergravity equations from T-duality covariant equations, that facilitates generalization U-duality formulations of eleven-dimensional supergravity. The latter leads modification with terms contain rank-2 tensor field $J^{mn}$ which is analog non-unimodularity Killing vector $I^m$ in ten dimensions.

We find a new solution of Type IIB supergravity which represents a collection of D5 branes wrapped on the topologically non-trivial S of the deformed conifold geometry T S. The Type IIB solution is obtained by lifting a new solution of D = 7 SU(2)L × SU(2)R gauged supergravity to ten dimensions in which SU(2)D gauge fields in the diagonal subgroup are turned on. The supergravity solution descri...

We explore the connection between anti-deSitter supergravity and gauge theory, in the context of bound states of many D1 and D5 branes. The near-horizon AdS3 supergravity describes the identity sector of the conformal field theory produced by the brane dynamics. A variant of anomaly inflow (for the 2d conformal anomaly) is involved. Dynamical matter fields on AdS3 couple to the chiral ring and ...

Five nontrivial stationary points are found for maximal gauged N=16 supergravity in three dimensions with gauge group SO(8) × SO(8) by restricting the potential to a submanifold of the space of SU (3) ⊂ (SO(8) × SO(8)) diag singlets. The construction presented here uses the embedding of E 7(+7) ⊂ E 8(+8) to lift the analysis of N = 8, D = 4 supergravity performed by N. Warner to N = 16, D = 3, ...