Removing singularities
Dec, 200221 pages
Published in:
- JHEP 01 (2003) 017
e-Print:
- hep-th/0212242 [hep-th]
Report number:
- RI-05-02
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Abstract:
Big bang/crunch curvature singularities in exact CFT string backgrounds can be removed by turning on gauge fields. This is described within a family of {SL(2)xSU(2)xU(1)_x}/{U(1)xU(1)} quotient CFTs. Uncharged incoming wavefunctions from the ``whiskers'' of the extended universe can be fully reflected if and only if a big bang/crunch curvature singularity, from which they are scattered, exists. Extended BTZ-like singularities remain as long as U(1)_x is compact.- string model
- background field
- field theory: conformal
- dimension: 2
- Wess-Zumino-Witten model
- coset space
- wave function
- boundary condition
- singularity
- gauge field theory: abelian
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