D-Brane Probe and Closed String Tachyons

Abstract

We consider a D-brane probe in unstable string background associated with flux branes. The twist in spacetime metric reponsible for the supersymmetry breaking is shown to manifest itself in mixing of open Wilson lines with the phases of some adjoint matter fields, resulting in a nonlocal and nonsupersymmetric form of Yang-Mills theory as the probe dynamics. This provides a setup where one can study fate of a large class of unstable closed string theories that include as a limit type 0 theories and various orbifolds of type II and type 0 theories. We discuss the limit of $\mathbf{C}/Z_n$ orbifold in some detail and speculate on couplings with closed string tachyons.

LaTeX, 17 pages, typos fixed, references updated

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• (Twisted) Toroidal Compactification of pp-Waves
• Closed String Tachyon Condensation on Twisted Circles
• Closed String Tachyon Condensation: An Overview
• Open Strings in Exactly Solvable Model of Curved Spacetime and PP-Wave Limit
• Localized instabilities at conifolds
• Evolution of D-branes Under Closed String Tachyon Condensation
• Charged Tachyons and Gauge Symmetry Breaking
• Probe Branes Dynamics: Exact Solutions in General Backgrounds
• Off-Shell Interactions for Closed-String Tachyons
• Condensation of Localized Tachyons and Spacetime Supersymmetry
• Closed String Tachyons, Non-Supersymmetric Orbifolds and Generalised McKay Correspondence
• Comments on the Fate of unstable orbifolds
• On the CSFT approach to localized closed string tachyons
• A Note on Perturbative and Nonperturbative Instabilities of Twisted Circles
• Closed String Tachyons on C/Z_N
• Orientifolds of String Theory Melvin backgrounds
• On decay of Bulk Tachyons
• Localized tachyon mass and a g-theorem analogue
• Tachyon condensation and off-shell gravity/gauge duality
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• Closed string tachyon potential and $t{t}^{\ast }$ equation
• Toda systems in closed string tachyon condensation
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