Destabilizing Tachyonic Vacua at or above the BF Bound(Astrophysics and Cosmology)

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概要

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• It is well known that tachyonic vacua in an asymptotically Anti-de Sitter (AdS) spacetime are classically stable if the mass squared is at or above the Breitenlohner and Freedman (BF) bound. We study the quantum stability of these tachyonic vacua in terms of instantons. We find a, series of exact instanton solutions destabilizing tachyonic state at or above the BF bound in asymptotically AdS space. We also give an analytic formula for the decay rate and show that it is finite. Comparing our result with the well-known algebraic condition for the stability, we discuss stability conditions of tachyonic vacua at or above the BF bound.

• 2012-07-25

著者

• SASAKI Misao

  Yukawa Institute for Theoretical Physics, Kyoto University

• SODA Jiro

  Department of Physics, Kyoto University

• Sasaki Misao

  Yukawa Institute For Theoretical Physics Kyoto University

• Soda Jiro

  Department Of Fundamental Sciences Fihs Kyoto University

• Soda Jiro

  Reaearch Institute For Theoretical Physics Hiroshima University

• Kanno S

  Department Of Physics Mcgill University

• KANNO Sugumi

  Institute of Cosmology, Department of Physics and Astronomy, Tufts University

• SASAKI Misao

  Department of Earth and Space Science, Osaka University

• SASAKI Misao

  Department of Earth and Space Science, Graduate School of Science Osaka University

• SASAKI Misao

  Research Institute for Fundamental Physics, Kyoto University

• SASAKI Misao

  Research Institute for Theoretical Physics, Hiroshima University

• SASAKI Misao

  Department of Physics, School of Science, University of Tokyo

• Kanno Shokichi

  Department of Physics, McGill University

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