Finite temperature effects in modular cosmology
  We revisit the cosmological history in the presence of light moduli by
including possible thermal effects in the scalar potential. The well known
cosmological moduli problem regards initial energy stored in the moduli due to
a misalignment from its final position during inflation. We show that finite
temperature corrections to the scalar potential, in general, induce similar
effects and these are likely to overcome the ones from the misalignment. This
changes important parameters like the preferred window for the numbers of
e-fold during inflation and the final reheating temperature in a
model-dependent manner. The general implications are a longer late modulus
dominated epoch and a larger final reheating temperature. We explore all the
discussed elements in type-IIB superstring Large Volume Compactification with a
K\"ahler inflationary scenario, where zero temperature results are known. An
instability analysis, using a Floquet approach, is also performed for this
explicit case finding strong indications of possible oscillon production around
a nearly universal normalized critical temperature, where the Floquet exponents
show a divergent behaviour.
