RT Dissertation/Thesis T1 Explorations in higher-derivative gravity: holography and astrophysics A1 Rivadulla Sánchez, Alberto K1 Gravity K1 black holes K1 holography K1 theoretical physics AB This thesis investigates the role of higher-derivative correctionsin the gravity action across various scenarios. The first partfocuses on the domain of holography, and in this context wepropose a method for holographic renormalization valid forgeneral theories in up to 5 dimensions. Subsequently, weemploy the framework of AdS/CFT to examine the effect ofcubic-curvature terms in a system known as the holographicsuperconductor. Besides the curvature tensors, it is possible toconstruct corrections with contractions of other fields. Inparticular, we consider theories that are dual to a CFT with anon-minimally coupled chemical potential. Finally, the thesistransitions into the field of astrophysics, and we study theimpact of higher-curvature terms in processes of accretion ofmatter by black holes. YR 2023 FD 2023 LK http://hdl.handle.net/10347/31503 UL http://hdl.handle.net/10347/31503 LA eng DS Minerva RD 22 abr 2026