Speaker: Roberta Angius Institution: IFT UAM/CSIC Location&Place: Red Room Abstract: This thesis aims to explore various corners of the string theory moduli spaces using symmetries as a guiding principle to uncover properties of the corresponding theories and their implications for spacetime dynamics.  Within the Swampland Program, the absence of global symmetries in consistent quantum gravity […]

Speaker:  Jesús Huertas Castellanos Institution: IFT UAM/CSIC Location&Place: Red Room Abstract: This thesis investigates the intricate relationship between topology, gravity, and quantum field theory within String Theory, centering on the Cobordism Conjecture, which asserts that any consistent quantum gravity theory must allow spacetime boundaries. It begins by introducing Dynamical Cobordism through models that realize end-of-the-world […]

Speaker: Alejandro Pérez Rodríguez Location&Place: Red Room Abstract: In this thesis, we explore two departures from the single field, slow-roll paradigm of inflation. The first part is dedicated to warm inflation. We revisit the theory of linear perturbations in this framework, develop computational techniques for the calculation of the primordial power spectrum and apply them to […]