  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.
