This article reviews the generalization of field theory to space-time with noncommuting
coordinates, starting with the basics and covering most of the active directions of research …

We review recent developments on nonrelativistic string theory. In flat spacetime, the theory
is defined by a two-dimensional relativistic quantum field theory with nonrelativistic global …

We construct a Galilean invariant nongravitational closed string theory whose excitations
satisfy a nonrelativistic dispersion relation. This theory can be obtained by taking a …

We examine the T-duality relation between 1+ 1 NCOS and the DLCQ limit of type-IIA string
theory. We show that, as long as there is a compact dimension, one can meaningfully define …

We review recent progress on the instabilities of black strings and branes both for pure
Einstein gravity as well as supergravity theories which are relevant for string theory. We …

A bstract We study worldvolume actions for D-branes coupled to the worldvolume U (1)
gauge field and Ramond-Ramond (RR) potentials in nonrelativistic string theory. This theory …

By exploiting the BV quantization of topological bosonic open membrane, we argue that flat
3-form C-field leads to deformations of the algebras of multi-vectors on the Dirichlet-brane …

We show that field theories with light-like noncommutativity, that is with θ 0i=− θ 1i, are
unitary quantum theories, and that they can be obtained as decoupled field theory limits of …

A bstract We study a decoupling limit of M-theory where the three-form gauge potential
becomes critical. This limit leads to nonrelativistic M-theory coupled to a non-Lorentzian …

We study some aspects of the Ka luza-Klein Melvin solution in M-theory. The associated
magnetic field has a maximal critical value B=±1/R where R is the radius of the …