On the Production of Open Strings from Brane Anti-Brane Annihilation

Details On the Production of Open Strings from Brane Anti-Brane Annihilation On the Production of Open Strings from Brane Anti-Brane Annihilation

2005-10-30

arxiv.org/abs/hep-th/0510261v3

JHEP0601:033,2006

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 6 figures; references added, typos corrected, accepted for publication in JHEP

Scientific paper

10.1088/1126-6708/2006/01/033

We investigate the leading contribution to open string production in the time dependent background of the Brane Anti-Brane. This is a 1-loop diagram and we use Boundary Conformal Field Theory (BCFT) techniques to study it. We show that the amplitude to a single open string naively diverges when one looks at it as an expansion in oscillator levels. Nevertheless, we show that once we sum over all oscillator levels we get a finite result. We also clarify where to perform the inverse Wick rotation in this kind of problems. This calculation could have important consequences for the theory of reheating in brane inflationary models.

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