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Strings in Time-Dependent Orbifolds
Open accessAbstract
We continue and extend our earlier investigation ``Strings in a Time-Dependent Orbifold'' (hep-th/0204168). We formulate conditions for an orbifold to be amenable to perturbative string analysis and classify the low dimensional orbifolds satisfying these conditions. We analyze the tree and torus amplitudes of some of these orbifolds. The tree amplitudes exhibit a new kind of infrared divergences which are a result of some ultraviolet effects. These UV enhanced IR divergences can be interpreted as due to back reaction of the geometry. We argue that for this reason the three dimensional parabolic orbifold is not amenable to perturbation theory. Similarly, the smooth four dimensional null-brane tensored with sufficiently few noncompact dimensions also appears problematic. However, when the number of noncompact dimensions is sufficiently large perturbation theory in these time dependent backgrounds seems consistent.
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Cites
Black hole in three-dimensional spacetime
Bañados, M., Teitelboim, C., & Zanelli, J. (1992) · Physical Review Letters · doi:10.1103/physrevlett.69.1849 · Cited by 3,831
Cosmological breaking of supersymmetry
BANKS, T. (2001) · International Journal of Modern Physics A · doi:10.1142/s0217751x01003998 · Cited by 248
Cited by
Ekpyrotic and Cyclic Cosmology
Lehners, J.-L. (2008) · Physics Reports · doi:10.1016/j.physrep.2008.06.001 · Cited by 381
Strings in an electric field, and the Milne Universe
Berkooz, M., & Pioline, B. (2003) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2003/11/007 · Cited by 88
Closed strings in Misner space: cosmological production of winding strings
Berkooz, M., Pioline, B., & Rozali, M. (2004) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2004/08/004 · Cited by 54
Metadata
- Authors
- Liu, H., Moore, G., & Seiberg, N.
- Venue
- Journal of High Energy Physics
- Published
- 2002-10-10
- Volume
- 2002
- Issue
- 10
- Pages
- 031-031
- ISSN
- 1029-8479 (ISSN-L)
- OpenAlex
- W2089209281
- Cited by
- 224
- References
- 2
- FWCI
- 21.78
- Type
- journal article
- Language
- en
- Open access
- bronze
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