Real-time D-brane condensation
arXiv:hep-th/0301101 · doi:10.1016/S0370-2693(03)00655-5
Abstract
Unstable D-branes or brane-antibrane systems can decay to lower-dimensional branes. In the effective field theory description, the final state branes are defects in the tachyon field which describes the initial instability. We study the dynamical formation of codimension one defects (kinks) using Sen's ansatz for the tachyon Lagrangian. It is shown that the slope of the kink diverges within a finite amount of time after the tachyon starts to roll. We discuss the relevance for reheating after brane-antibrane inflation.
arXiv comment10 pages, 5 figures; added reference to hep-th/0207105
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