Time-dependent backgrounds in supergravity and string theory
Time-dependent solutions of supergravity and string theory are studied. The examples are obtained from de Sitter deformation of gauge-gravity dualities, analytical continuation of static solutions, and “exactly solvable” worldsheet models. Among other things, it is shown that turning on a Hubble par...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
16 January 2003
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2003, Jahrgang: 67, Heft: 2 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.67.024011 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.67.024011 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.67.024011 
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| Verfasserangaben: | Alex Buchel (Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106), Peter Langfelder (Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106 and C.N. Yang Institute for Theoretical Physics, State University of New York, Stony Brook, New York 11794-3840), Johannes Walcher (Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106) |
| Zusammenfassung: | Time-dependent solutions of supergravity and string theory are studied. The examples are obtained from de Sitter deformation of gauge-gravity dualities, analytical continuation of static solutions, and “exactly solvable” worldsheet models. Among other things, it is shown that turning on a Hubble parameter in the background of a confining gauge theory in four dimensions can restore chiral symmetry. Some of the solutions obtained from analytical continuation have the interpretation of a universe with a bounce separating a big bang from a big crunch singularity. In the worldsheet context, it is argued why string propagation close to a Milne-type cosmological singularity might be physically nonsingular. |
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| Beschreibung: | Gesehen am 15.02.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.67.024011 |