Light-like tachyon condensation in Open String Field Theory

Abstract

We use open string field theory to study the dynamics of unstable branes in the bosonic string theory, in the background of a generic linear dilaton. We find a simple exact solution describing a dynamical interpolation between the perturbative vacuum and the recently discovered nonperturbative tachyon vacuum. In our solution, the open string tachyon increases exponentially along a null direction, after which nonlinearities set in and cause the solution to asymptote to a static state. In particular, the wild oscillations of the open string fields which plague the time-like rolling tachyon solution are entirely absent. Our model thus represents the first example proving that the true tachyon vacuum of open string field theory can be realized as the endpoint of a dynamical transition from the perturbative vacuum.

40 pages

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Cited by in corpus (10)

• Analytical Solutions of Open String Field Theory
• On the classical equivalence of superstring field theories
• Solutions from boundary condition changing operators in open superstring field theory
• Comments on gauge invariant overlaps for marginal solutions in open string field theory
• One-Loop Riemann Surfaces in Schnabl Gauge
• A tachyon lump in closed string field theory
• Fisher Equation for a Decaying Brane
• Tachyon Vacuum Solution in Open String Field Theory with Constant B Field
• Travelling Front of a Decaying Brane in String Field Theory
• Note on Light-like Tachyon Condensation