  In theories with TeV scale quantum gravity the standard model particles live
on a brane propagating in large extra dimensions. Branes may be stabilized at
large (sub-millimeter) distances from each other, either due to weak Van der
Waals type interactions, or due to an infrared analog of Witten's inverse
hierarchy scenario. In particular, this infrared stabilization may be
responsible for a large size of extra dimensions. In either case, thermal
effects can drive a brief period of the late inflation necessary to avoid the
problems with high reheating temperature and the stable unwanted relics. The
main reason is that the branes which repel each other at zero temperature can
be temporarily glued together by thermal effects. It is crucial that the
temperature needed to stabilize branes on top of each other can be much smaller
than the potential energy of the bound-state, which drives inflation. After
10-15 $e$-foldings bound-states cool below the critical temperature and decay
ending inflation. The parallel brane worlds get separated at this stage and
superstrings (of a sub-millimeter size) get stretched between them. These
strings can have the right density in order to serve as a superheavy dark
matter.
