Bouncing universe and non-BPS branes

  • Philipp Höffer v. Loewenfeld
  • Jin U Kang
  • Nicolas MoellerEmail author
  • Ivo Sachs


We describe string frame bouncing universe scenarios involving the creation and annihilation of a non-BPS D9-brane in type IIA superstring theory. We find several classes of solutions, in which the bounce is driven by the tachyon dynamics of the non-BPS brane. The metric and dilaton during the bounce are consistently described in terms of the lowest order effective action. The bounce solutions interpolate between contracting and expanding pre-big bang (or post-big bang) solutions. The singular behavior of our bounce solutions is the same as that of the pre-big bang (or post-big bang) solution.


Tachyon Condensation Cosmology of Theories beyond the SM Spacetime Singularities 


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Copyright information

© SISSA, Trieste, Italy 2010

Authors and Affiliations

  • Philipp Höffer v. Loewenfeld
    • 1
  • Jin U Kang
    • 1
    • 2
  • Nicolas Moeller
    • 1
    Email author
  • Ivo Sachs
    • 1
  1. 1.Arnold Sommerfeld Center for Theoretical Physics (ASC)Ludwig-Maximilians-Universität MünchenMünchenGermany
  2. 2.Department of PhysicsKim Il Sung UniversityPyongyangD.P.R. Korea

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