Explorations in higher-derivative gravityholography and astrophysics
- Rivadulla Sánchez, Alberto
- José Daniel Edelstein Director
Universidade de defensa: Universidade de Santiago de Compostela
Fecha de defensa: 09 de novembro de 2023
- Bert Janssen Presidente/a
- Alfonso Vázquez Ramallo Secretario
- Damián Andrés Galante Vogal
Tipo: Tese
Resumo
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.