String creation and cosmology

Details String creation and cosmology String creation and cosmology

2003-12-31

arxiv.org/abs/hep-th/0312321v1

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, latex2e. Contribution to the proceedings of QTS3

Scientific paper

I argue that string creation may have played a role in reheating the universe after inflation. For strings in four dimensions that arise from branes wrapping cycles in the extra dimensions, estimates from effective field theory show that the string tension need only fall a couple of orders of magnitude below the Planck scale in order for string creation to extract a significant fraction of the energy in coherent motion of the inflaton field. I also comment on a special four-dimensional background which involves only Neveu-Schwarz fields and offers the possibility of studying closed string creation on the worldsheet.

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