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Paper   IPM / P / 7737
School of Physics
  Title:   Semiclassical String Solutions on 1/2 BPS Geometries
1.  H. Ebrahim
2.  Amir E. Mosaffa
  Status:   Published
  Journal: JHEP
  Vol.:  01
  Year:  2005
  Pages:   050
  Supported by:  IPM
We study semiclassical string solutions on the 1/2 BPS geometry of type IIB string theory characterized by concentric rings on the boundary plane. We consider both folded rotating strings carrying nonzero R-charge and circular pulsating strings. We find that unlike rotating strings, as far as circular pulsating strings are concerned, the dynamics remains qualitatively unchanged when the concentric rings replace AdS_5 S^5. Using the gravity dual we have also studied the Wilson loop of the corresponding gauge theory. The result is qualitatively the same as that in AdS_5 S^5 in the global coordinates where the corresponding gauge theory is defined on S^3 R. We show that there is a correction to 1/L leading order behavior of the potential between external objects.

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