Universitat de Barcelona
Mostrando ítems 43-62 de 68
In single A hypernuclei, a A hyperon can occupy any orbital in the hypernucleus since it is free from the Pauli exclusion principle due to its additional quantum number strangeness. <br/><br/>Due to the Pauli blocking ...
Las transiciones de fase no siempre ocurren bajo condiciones de equilibrio. Un fluido puede ser conducido a un estado metastable. A pesar de ser internamente estable, existe otra configuración con un potencial termodinámico ...
[spa] El proyecto de tesis está enfocado en el estudio de la evolución del Universo y más concretamente en la explicación del mecanismo que produce su actual expansión acelerada, y que probablemente sea el mismo que ha ...
In this thesis we present several studies on the origin of masses at the LHC. First we study the indirect effects of new physics on the couplings of the recently discovered Higgs boson and on the electroweak symmetry ...
Wormlike micelles are viscoelastic fluids that present an intermediate behavior between solids and ordinary liquids since they are elastic at short time scales but flow easily at large time scales. In opposition to Newtonian ...
The main problematics related to the determination of a set of Parton Distribution Functions (PDFs) are presented and, after a brief discussion on different strategies adopted by other groups to address them, the NNPDF ...
Multicellular organisms are constituted by different kinds of cells which are arranged in a particular way, forming tissues with specific functions. The organization of these different cells can give rise to regular ...
[eng] The discovery of molecular motors was not a single and isolated event but a set of gradual approaches from microscopic to nanoscopic systems. For example, the knowledge of the activity of muscle cells is pretty old, ...
[spa] En esta Tesis se ha realizado en el marco de la Información Cuántica, una nueva disciplina de la Física Teórica en la que se funden la Mecánica Cuántica con la Teoría de la Información. El estudio se ha centrado en ...
The mechanics and elasticity of red blood cells (RBCs) determine the capability to deform of these cells when passing through the thinnest capillaries, where the delivery of oxygen takes place. The understanding of the ...
Se presenta un trabajo experimental sobre el crecimiento de interficies rugosas en medios desordenados. El experimento consiste en una celda de Hele-Shaw en cuya placa inferior se han distribuido una serie de obstáculos ...
In this thesis we study the possibility that QCD breaks parity at high temperatures and densities, a scenario that may be tested in heavy ion collisions. We present two different approaches to this problem. On the one hand, ...
The quantum many-body problem is an everlasting challenge for theoretical physics. The aim sought is to analyze, at the quantum level, the observables arising from a group formed by a certain number of interacting particles ...
The present work deals with different aspects concerning the collective action of cytoskeletal molecular motors. The thesis is organized in two parts: the first part corresponds to the study of the cooperative action of ...
The nuclear many-body problem is nowadays being increasingly approached on the basis of a relativistic formalism. Microscopic Dirac-Brueckner-Hartree-Fock (DBHF) calculations starting from a realistic nucleon-nucleon ...
Els models microscòpics usuals que es proposen en Mecànica Estadística descriuen, únicament, un tipus de grau de llibertat. Aquests models permeten explicar algunes transicions de fase que es troben en els diagrames de ...
In this thesis we study axions, a byproduct of the Peccei-Quinn solution to the strong CP problem, which are also a viable candidate for the dark matter content of the Universe. In the first part of the thesis, we ...
In this thesis a viable theory of gravity resulting from the spontaneous symmetry breaking of some more fundamental theory is developed. This fundamental theory does not include any notion of a metric or geometry. All the ...
Stochastic fluctuations, or noise, are ubiquitous in biological systems and play an important role in many cellular processes. Experimental evidences have shown that noise affects the reliability of cell coordination in ...
This thesis presents a collection of four papers published in peer-reviewed scientific journals plus a manuscript yet to be submitted, all of them in the field of low temperature physics and quantum fluids. Each of these ...
