We propose a new mechanism of spontaneous supersymmetry breaking in noncommutative gauge theories. We find that in N = 1 noncommutative gauge theories both supersymmetry and gauge invariance areâ€¦ (More)

In a previous paper we provided a consistent quantization of open strings ending on D-branes with a background B field. In this letter, we show that the same result can also be obtained using theâ€¦ (More)

We consider AdS/CFT correspondence for time-dependent IIB backgrounds in this paper. The supergravity solutions we construct are supersymmetric pp-waves on AdS and may have null singularity in theâ€¦ (More)

Motivated by the recent work of Hofman and Maldacena [1] we construct a classical string solution on the Î²-deformed AdS5Ã—SÌƒ background. This string solution is identified with a magnon state of theâ€¦ (More)

In this paper we consider the quantization of open strings ending on D-branes with a background B field. We find that spacetime coordinates of the open string end-points become noncommutative, andâ€¦ (More)

We consider noncommutative gauge theory with Dirac or Majorana fermions in odd dimensional spacetime and compute the induced noncommutative Chern-Simons action generated at 1-loop. We observe thatâ€¦ (More)

Recently it has been proposed that the coefficient of the three-point function of the BMN operators in N = 4 supersymmetric Yang-Mills theory is related to the three-string interactions in theâ€¦ (More)

The open string ending on a D-brane with a constant B-field in a pp-wave Ramond-Ramond background is exactly solvable. The theory is controlled by three dimensionful parameters: Î±, the mass parameterâ€¦ (More)

The vector fields of the quantum Lie algebra are described for the quantum groups GL q (N), SL q (N) and SO q (N) as pseudodifferential operators on the linear quantum spaces covariant under theâ€¦ (More)

We consider the problem of constructing the fully gauged effective action in 2n-dimensional space-time for Nambu-Goldstone bosons valued in a homogeneous space G/H, with the requirement that theâ€¦ (More)