Instabilities and particle production in S-brane geometries

Clifford P. Burgess, Patrick Martineau, Fernando Quevedo, C. Ivonne Zavala, Gianmassimo Tasinato

Research output: Contribution to journalArticlepeer-review


We study the classical stability of a class of S-brane geometries having cosmological horizons. By considering the perturbations of the metric in these geometries we establish that their horizons are unstable in the sense that an observer trying to cross the horizon experiences an infinite flux of radiation at the instant of crossing. The backreaction of this radiation is likely to convert the horizons into curvature singularities, similar to the instability of the internal Cauchy horizon of the Reissner-Nordström black hole. We also compute the particle production by the time-dependent fields in the future regions of these geometries, and find that the spectrum of produced particles is thermal, with temperature coinciding with the Hawking temperature computed by euclideanizing the metric in the static region. Possible implications of these results are discussed.

Original languageEnglish (US)
Pages (from-to)1073-1089
Number of pages17
JournalJournal of High Energy Physics
Issue number3
StatePublished - Mar 1 2003


  • Black Holes
  • Cosmology of Theories beyond the SM
  • P-branes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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