A Worldsheet Description of Instant Folded Strings

Abstract

Time-like linear dilaton backgrounds admit a classical solution that describes a closed folded string that is created at an instant. We refer to such strings as Instant Folded Strings (IFS). We study an exact worldsheet CFT description of an IFS that involves two vertex operators which describe two open string modes that propagate on a time-like FZZT-brane, which plays the role of a regulator to the IFS. We take advantage of this description to calculate the most basic quantity associated with IFSs - their production rate. Some implications of this calculation to stringy cosmology and black hole interior are briefly discussed.

31 pages, 9 figures

References in corpus (6)

• Ghost D-branes
• Notes on Liouville Theory at c<=1
• Stringy ER=EPR
• Instant Folded Strings and Black Fivebranes
• Explicit microstates at the Schwarzschild horizon
• String Theory and The Arrow of Time

Cited by in corpus (3)

• A Two-Dimensional String Cosmology
• Is the horizon of an eternal black hole really smooth?
• Bridging Worldsheet CFTs and Wormholes