Brane Decay and Death of Open Strings

Abstract

We show how open strings cease to propagate when unstable D-branes decay. The information on the propagation is encoded in BSFT two-point functions for arbitrary profiles of open string excitations. We evaluate them in tachyon condensation backgrounds corresponding to (i) static spatial tachyon kink (= lower dimensional BPS D-brane) and (ii) homogeneous rolling tachyon. For (i) the propagation is restricted to the directions along the tachyon kink, while for (ii) all the open string excitations cease to propagate at late time and are subject to a collapsed light cone characterized by Carrollian contraction of Lorentz group.

19 pages, published version (typos corrected, a reference added)

References in corpus (12)

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• Rolling Tachyon with Electric and Magnetic Fields -- T-duality approach -----
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Cited by in corpus (7)

• Tachyon Dynamics in Open String Theory
• Overproduction of cosmic superstrings
• The Symmetries of the Carroll Superparticle
• On Superstring Disk Amplitudes in a Rolling Tachyon Background
• Boundary String Field Theory as a Field Theory -- Mass Spectrum and Interaction
• Homogeneous Rolling Tachyons in Boundary String Field Theory
• Defect Formation with Bulk Fields