The Final Fate of the Rolling Tachyon

Abstract

We propose an alternative interpretation of the boundary state for the rolling tachyon, which may depict the time evolution of unstable D-branes in string theory. Splitting the string variable in the temporal direction into the classical part, which we may call "time" and the quantum one, we observe the time dependent behaviour of the boundary. Using the fermion representation of the rolling tachyon boundary state, we show that the boundary state correctly describes the time-dependent decay process of the unstable D-brane into a S-brane at the classical level.

9 pages, revtex

References in corpus (2)

• A solution to the 4-tachyon off-shell amplitude in cubic string field theory
• Rolling Tachyon with Electromagnetic Field in Linear Dilaton Background

Cited by in corpus (7)

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• Covariant open bosonic string field theory on multiple D-branes in the proper-time gauge
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• Chiral Fermion and Boundary State Formulation: Resonant Point-Contact Tunneling
• Quons in a Quantum Dissipative System
• Resonant Multilead Point-Contact Tunneling: Boundary State Formulation