Cosmological spacetimes from negative tension brane backgrounds

Cliff P. Burgess, Fernando Quevedo, Ivonne Zavala C, Soo Jong Rey, Gianmassimo Tasinato

Research output: Contribution to journalArticlepeer-review


We identify a time-dependent class of metrics with potential applications to cosmology, which emerge from negative-tension branes. The cosmology is based on a general class of solutions to Einstein-dilaton-Maxwell theory, presented in hep-th/0106120. We argue that solutions with hyperbolic or planar symmetry describe the gravitational interactions of a pair of negative-tension g-branes. These spacetimes are static near each brane, but become time-dependent and expanding at late epoch -in some cases asymptotically approaching flat space. We interpret this expansion as being the spacetime's response to the branes' presence. The time-dependent regions provide explicit examples of cosmological spacetimes with past horizons and no past naked singularities. The past horizons can be interpreted as S-branes. We prove that the singularities in the static regions are repulsive to time-like geodesies, extract a cosmological "bounce" interpretation, compute the explicit charge and tension of the branes, analyse the classical stability of the solution (in particular of the horizons) and study particle production, deriving a general expression for Hawking's temperature as well as the associated entropy.

Original languageEnglish (US)
Pages (from-to)539-581
Number of pages43
JournalJournal of High Energy Physics
Issue number10
StatePublished - Oct 1 2002


  • Cosmology of Theories beyond the SM
  • p-branes
  • Superstrings and Heterotic Strings

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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