Penrose limits, pp waves, and deformed M2-branes Academic Article uri icon


  • Motivated by the recent discussions of the Penrose limit of [Formula Presented] we examine a more general class of supersymmetric pp-wave solutions of the type IIB theory, with a larger number of nonvanishing structures in the self-dual 5-form. One of the pp-wave solutions can be obtained as a Penrose limit of a D3-D3 intersection. In addition to 16 standard supersymmetries these backgrounds always allow for supernumerary supersymmetries. The latter are in one-to-one correspondence with the linearly realized world-sheet supersymmetries of the corresponding exactly solvable type IIB string action. The pp-waves provide new examples where supersymmetries will survive in a T-duality transformation on the [Formula Presented] coordinate. The T-dual solutions can be lifted to give supersymmetric deformed M2-branes in [Formula Presented] The deformed M2-brane is dual to a three-dimensional field theory whose renormalization group flow runs from the conformal fixed point in the infrared regime to a nonconformal theory as the energy increases. At a certain intermediate energy scale there is a phase transition associated with a naked singularity of the M2-brane. In the ultraviolet limit the theory is related by T duality to an exactly solvable massive type IIB string theory. 2004 The American Physical Society.

published proceedings


author list (cited authors)

  • Cvetic, M., Lu, H., & Pope, C. N.

citation count

  • 28

complete list of authors

  • Cvetic, M||Lu, H||Pope, CN

publication date

  • February 2004