On Closed String Tachyon Dynamics
arXiv:hep-th/0510126 · doi:10.1103/PhysRevD.73.066015
Abstract
We study the condensation of closed string tachyons as a time-dependent process. In particular, we study tachyons whose wave functions are either space-filling or localized in a compact space, and whose masses are small in string units; our analysis is otherwise general and does not depend on any specific model. Using world-sheet methods, we calculate the equations of motion for the coupled tachyon-dilaton system, and show that the tachyon follows geodesic motion with respect to the Zamolodchikov metric, subject to a force proportional to its beta function and friction proportional to the time derivative of the dilaton. We study the relationship between world-sheet RG flow and the solutions to our equations, finding a close relationship in the case that the spatial theory is supercritical and the dilaton has a negative time derivative.
27 pages in body, 42 pages total; v2: exposition improved, references added; v3: comment added on localized tachyons, reference added, published version
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- Consistency condition for inflation from (broken) conformal symmetry
- Cosmologies with Null Singularities and their Gauge Theory Duals
- Dimension-changing exact solutions of string theory
- Conformal perturbation theory beyond the leading order
- Charting the landscape of supercritical string theory
- Supercritical stability, transitions and (pseudo)tachyons
- Boundary Entropy Can Increase Under Bulk RG Flow
- Gradient formula for the beta-function of 2d quantum field theory
- Modeling Quantum Gravity Effects in Inflation
- A Thermodynamic Interpretation of Time for Rolling Tachyons
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- Classifying Superconformal Defects in Diverse Dimensions Part I: Superconformal Lines
- Quantization of Wilson loops in Wess-Zumino-Witten models
- Holography and Renormalization in Lorentzian Signature
- Topologically Massive Gravity and Ricci-Cotton Flow
- The Fixed Points of RG Flow with a Tachyon
- Braid Matrices and Quantum Gates for Ising Anyons Topological Quantum Computation
- Nothing for Branes
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- On nonsupersymmetric $\BC^4/\BZ_N$, tachyons, terminal singularities and flips
- Quantum Effects on Tachyon Dynamics
- On the time-dependent description for the decay of unstable D-branes
- Phases of unstable conifolds
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- Holographic RG Flows from Quasi-Topological Gravity
- A worldsheet perspective on string inflation
- Renormalization-group flows and charge transmutation in string theory
- Exact null tachyons from RG flows
- Bulk induced boundary perturbations