Stabilisation of the angular directions in brane-antibrane inflation

Brane-antibrane inflation is an exciting framework in string cosmology that aims at connecting fundamental physics with the accelerated expansion of the early universe. However, achieving a successful and viable inflationary phase requires stabilization of all moduli fields, including the angular directions arising in extra- dimensional compactifications. This thesis explores how the angular directions can be stabilized in the context of Type IIB string theory, focusing on warped compactifications and the effects of perturbative and non-perturbative corrections. We examine how flux compactifications and Kähler moduli stabilization contribute to a controlled inflationary scenario and analyze their impact on slow-roll inflation. Our findings contribute to the understanding of moduli stabilization in string cosmology, ensuring a consistent and phenomenologically viable realization of brane-antibrane inflation.