Singular and Smooth Time-Dependent Orbifolds
- SLAC
We consider string theory in a smooth time-dependent orbifold of Minkowski space, which is known as the ''null-brane'', and whose limit reproduces a space time with a null singularity--the parabolic orbifold. We show that adding particles of small enough energy to the geometry does not cause a gravitational collapse. The null-brane is a well-behaved background of string theory where it is possible to compute string scattering amplitudes using perturbation theory. We also mention another way of making the parabolic orbifold smooth--besides considering the null-brane.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515;
- OSTI ID:
- 826646
- Report Number(s):
- SLAC-PUB-10312
- Country of Publication:
- United States
- Language:
- English
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