Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-04-28
Nucl.Phys. B682 (2004) 117-149
Physics
High Energy Physics
High Energy Physics - Theory
39pages,Latex,9 eps-figs,in v4 creation of closed strings discussed, energy dissipation by rads. replaced by that by creations
Scientific paper
10.1016/j.nuclphysb.2004.01.011
A quantum-mechanical technique is used within the framework of U(2) super-Yang-Mills theory to investigate what happens in the process after recombination of two D-p-branes at one angle. Two types of initial conditions are considered, one of which with $p=4$ is a candidate of inflation mechanism. It is observed that the branes' shapes come to have three extremes due to localization of tachyon condensation. Furthermore, open string pairs connecting the decaying D-branes are shown to be created; most part of the released energy is used to create them. It also strongly suggests that creation of closed strings happens afterward. Closed strings as gravitational radiation from the D-branes are also shown to be created. A few speculations are also given on implications of the above phenomena for an inflation model.
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