Open-Closed Duality at Tree Level
Ashoke Sen
TL;DR
It is shown that the classical open string theory results for various properties of the final state agree with the properties of closed string states into which the system is expected to decay.
Abstract
We study decay of unstable D-branes in string theory in the presence of electric field, and show that the classical open string theory results for various properties of the final state agree with the properties of closed string states into which the system is expected to decay. This suggests a duality between tree level open string theory on unstable D-branes and closed strings at high density.