On the Singularity Structure and Stability of Plane Waves

Details On the Singularity Structure and Stability of Plane Waves On the Singularity Structure and Stability of Plane Waves

2002-10-31

arxiv.org/abs/hep-th/0210309v3

JHEP 0301:076,2003

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 1 figure

Scientific paper

10.1088/1126-6708/2003/01/076

We describe various aspects of plane wave backgrounds. In particular, we make explicit a simple criterion for singularity by establishing a relation between Brinkmann metric entries and diffeomorphism-invariant curvature information. We also address the stability of plane wave backgrounds by analyzing the fluctuations of generic scalar modes. We focus our attention on cases where after fixing the light-cone gauge the resulting world sheet fields appear to have negative "mass terms". We nevertheless argue that these backgrounds may be stable.

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