Ara mostrant els elements 11-20 de 38
Triantafyllou, Nikolaos (Data de defensa: 2021-11-12)
The standard cosmological model, ΛCDM, with the addition of an early inflationary phase, provides an accurate description of a nearly flat and homogeneous Universe, at large scales, which expands ...
Gontcho, Satya Gontcho A (Data de defensa: 2017-09-22)
The work we present in this manuscript revolves around the use of quasar spectra to probe the Universe. Absorption features in the electromagnetic spectrum of bright distant quasars by ionized hydrogen ...
Torrents Verdaguer, Genís (Data de defensa: 2016-06-27)
Maldacena's conjecture, often known as the holographic duality or the AdS/CFT correspondence, proposes an equivalence between gravitational theories in a hyperbolic space of a certain dimensionality and ...
Moreno Pulido, Cristian (Data de defensa: 2023-07-06)
[eng] The Cosmological Constant, Λ, has been a controversial element in theoretical physics and cosmology since its introduction by Einstein in his field equations in 1917. Despite maintaining an irregular ...
Morera Navarro, Ivan (Data de defensa: 2023-07-10)
[eng] In this Thesis we explore exotic phases of matter which arise when different mechanisms compete and favor different ground state configurations. We focus on two classes of low dimensional lattice ...
Triana Iglesias, Miquel (Data de defensa: 2017-09-21)
The gauge/gravity duality has proven to be a very useful tool in the understanding of quantum field theories outside the perturbative regime. In particular, holography has been able to shed light not ...
Oncins Fernández, Marc (Data de defensa: 2022-06-03)
The existence of black holes that go beyond the mass given by their stellar origin has been known for some time. On the lower end, a subset of primordial black holes (PBHs) could form all of the dark ...
González Boquera, Claudia (Data de defensa: 2020-01-13)
The proper understanding of the equation of state (EoS) of highly asymmetric nuclear matter is essential when studying systems such as neutron stars (NSs). Using zero-range Skyrme interactions and ...
Santos-Oliván, Daniel (Data de defensa: 2017-07-12)
In this thesis we study several open problems using Numerical Relativity on asymptotically Anti-de Sitter (AdS) spacetimes. The understanding of the dynamics of AdS is interesting not only because of ...
Pérez Ràfols, Ignasi (Data de defensa: 2016-10-03)
The work presented in this Ph.D. thesis is mostly related to the measurement and interpretation of the cross-correlation of different species. This is achieved using spectroscopic data from the BOSS ...