Explorations in higher-derivative gravity: holography and astrophysics
- Autores: Alberto Rivadulla Sánchez
- Directores de la Tesis: José Daniel Edelstein (dir. tes.)
- Lectura: En la Universidade de Santiago de Compostela ( España ) en 2023
- Idioma: inglés
- Tribunal Calificador de la Tesis: Bert Janssen (presid.), Alfonso Vázquez Ramallo (secret.), Damián Andrés Galante (voc.)
- Programa de doctorado: Programa de Doctorado en Física Nuclear y de Partículas por la Universidad de Santiago de Compostela
- Materias:
- Enlaces
- Tesis en acceso abierto en: MINERVA
- Resumen
This thesis investigates the role of higher-derivative corrections in the gravity action across various scenarios. The first part focuses on the domain of holography, and in this context we propose a method for holographic renormalization valid for general theories in up to 5 dimensions. Subsequently, we employ the framework of AdS/CFT to examine the effect of cubic-curvature terms in a system known as the holographic superconductor. Besides the curvature tensors, it is possible to construct corrections with contractions of other fields. In particular, we consider theories that are dual to a CFT with a non-minimally coupled chemical potential. Finally, the thesis transitions into the field of astrophysics, and we study the impact of higher-curvature terms in processes of accretion of matter by black holes.
