Singularities and Closed String Tachyons

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A basic problem in gravitational physics is the resolution of spacetime singularities where general relativity breaks down. The simplest such singularities are conical singularities arising from orbifold identifications of flat space, and the most challenging are spacelike singularities inside black holes (and in cosmology). Topology changing processes also require evolution through classically singular spacetimes. I briefly review how a phase of closed string tachyon condensate replaces, and helps to resolve, basic singularities of each of these types. Finally I discuss some interesting features of singularities arising in the small volume limit of compact negatively curved spaces and the emerging zoology ... continued below

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9 pages

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Silverstein, Eva & /SLAC /Stanford U., Phys. Dept. March 17, 2006.

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A basic problem in gravitational physics is the resolution of spacetime singularities where general relativity breaks down. The simplest such singularities are conical singularities arising from orbifold identifications of flat space, and the most challenging are spacelike singularities inside black holes (and in cosmology). Topology changing processes also require evolution through classically singular spacetimes. I briefly review how a phase of closed string tachyon condensate replaces, and helps to resolve, basic singularities of each of these types. Finally I discuss some interesting features of singularities arising in the small volume limit of compact negatively curved spaces and the emerging zoology of spacelike singularities.

Physical Description

9 pages

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  • Contributed to 23rd Solvay Conference in Physics: The Quantum Structure of Space and Time, Brussel, Belgium, 1-3 Dec 2005

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  • Report No.: SLAC-PUB-11698
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 877427
  • Archival Resource Key: ark:/67531/metadc880372

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Office of Scientific & Technical Information Technical Reports

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  • March 17, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 1, 2016, 10:21 p.m.

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Silverstein, Eva & /SLAC /Stanford U., Phys. Dept. Singularities and Closed String Tachyons, article, March 17, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc880372/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.