Does the tachyon matter?
We study time-dependent solutions of Einstein-Maxwell gravity in four dimensions coupled to tachyon matter—the Dirac-Born-Infeld Lagrangian that provides an effective description of a decaying tachyon on an unstable D-brane in string theory. Asymptotically, the solutions are similar to the recently...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
7 November 2002
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| In: |
Annals of physics
Year: 2002, Jahrgang: 302, Heft: 1, Pages: 78-87 |
| DOI: | 10.1006/aphy.2002.6306 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1006/aphy.2002.6306 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0003491602963062 
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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, New York 11794-3840) and Johannes Walcher ( Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106) |
| Zusammenfassung: | We study time-dependent solutions of Einstein-Maxwell gravity in four dimensions coupled to tachyon matter—the Dirac-Born-Infeld Lagrangian that provides an effective description of a decaying tachyon on an unstable D-brane in string theory. Asymptotically, the solutions are similar to the recently studied space-like brane solutions and carry S-brane charge. They do not break the Lorentzian R-symmetry. We study tachyon matter as a probe in such a background and analyze its backreaction. For early/late times, the tachyon field has a constant energy density and vanishing pressure as in flat space. On the other hand, at intermediate times, the energy density of the tachyon diverges and produces a space-like curvature singularity. |
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| Beschreibung: | Gesehen am 15.02.2018 |
| Beschreibung: | Online Resource |
| DOI: | 10.1006/aphy.2002.6306 |