D-instantons and Closed String Tachyons in Misner Space

Abstract

We investigate closed string tachyon condensation in Misner space, a toy model for big bang universe. In Misner space, we are able to condense tachyonic modes of closed strings in the twisted sectors, which is supposed to remove the big bang singularity. In order to examine this, we utilize D-instanton as a probe. First, we study general properties of D-instanton by constructing boundary state and effective action. Then, resorting to these, we are able to show that tachyon condensation actually deforms the geometry such that the singularity becomes milder.

24 pages, 1 figure, minor changes

References in corpus (14)

• A Matrix Big Bang
• The Tachyon at the End of the Universe
• A Class of Cosmological Matrix Models
• The Time-dependent Supersymmetric Configurations in M-theory and Matrix Models
• pp Wave Big Bangs: Matrix Strings and Shrinking Fuzzy Spheres
• Shock Waves and Cosmological Matrix Models
• Dimensional Mutation and Spacelike Singularities
• D-branes in a Big Bang/Big Crunch Universe: Misner Space
• On Solvable Time-Dependent Model and Rolling Closed String Tachyon
• Closed Strings in Misner Space: Stringy Fuzziness with a Twist
• Hagedorn transition and chronology protection in string theory
• A time-dependent brane in a cosmological background
• Defects, Decay, and Dissipated States
• D-branes in a Big Bang/Big Crunch Universe: Nappi-Witten Gauged WZW Model

Cited by in corpus (18)

• AdS Bubbles, Entropy and Closed String Tachyons
• Time Dependent Cosmologies and Their Duals
• The Inside Story: Quasilocal Tachyons and Black Holes
• Effective Dynamics of the Matrix Big Bang
• Cosmologies with Null Singularities and their Gauge Theory Duals
• Big Bang Models in String Theory
• Matrix Membrane Big Bangs and D-brane Production
• Winding String Condensation and Noncommutative Deformation of Spacelike Singularity
• Thermal AdS(3), BTZ and competing winding modes condensation
• The Nothing at the Beginning of the Universe Made Precise
• A One Loop Problem of the Matrix Big Bang Model
• Closed String Tachyon Condensation in Supercritical Strings and RG Flows
• Nothing for Branes
• D-Brane solutions in a light-like linear dilaton background
• Matrix Quantum Mechanics on $S^1/{\mathbb{Z}}_2$
• Interactions for Winding Strings in Misner Space
• Winding String Dynamics in a Time-Dependent Beta Deformed Background
• Fractional S-branes on a Spacetime Orbifold