Penrose limit, spontaneous symmetry breaking, and holography in a pp-wave background

Sumit R. Das, Cesar Gomez, Soo Jong Rey

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


We argue that the gauge theory dual to the type IIB string theory in a ten-dimensional pp-wave background resides on a Euclidean subspace spanning four of the eight transverse coordinates. We then show that the evolution of the string along one of the light cone directions in the bulk is identifiable as the RG flow of the gauge theory, a relation facilitating the "holography" of the pp-wave background. The "holography" reorganizes the dual gauge theory into theories defined over Hilbert subspaces of fixed R charge. The reorganization breaks the SO(4,2)×SO(6) symmetry to a maximal subgroup SO(4)×SO(4) spontaneously. We argue that the low-energy string modes may be regarded as Goldstone modes resulting from such a symmetry breaking pattern.

Original languageEnglish
Article number046002
JournalPhysical review D
Issue number4
StatePublished - 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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