Effects of loop corrections on string inflation

In this Master Thesis we study the effects of loop corrections to the inflationary potential of the Kahler moduli inflation model. After reviewing basic concepts of String Theory and String Compactifications, focusing in particular on the Large Volume Scenario (LVS) in Type IIB String Theory, we introduce the model of Kahler moduli inflation, and the cosmological predictions thereof. We then consider two forms of open-string loop effects: Kaluza-Klein and Winding corrections. After comparing their relative magnitude, we study the inflationary potential arising upon inclusion of these corrections. We constrain the values of the parameters for which it can still support slow-roll inflation, and find the preferred range of the compactification volume. Afterwards, we analyze the post-inflationary dynamics of the model in two possible scenarios, and find a consistent prediction for the number of e-foldings of inflation in both cases. This yields a unique prediction for the scalar spectral index, which has to be compared with the experimental value obtained considering the amount of Dark Radiation predicted by our model.