Mostrando ítems 1-20 de 68
Dector Oliver, Aldo (Fecha de defensa: 2015-10-28)
The AdS/CFT correspondence is one of the most important developments in the history of theoretical physics. Using as a binding bridge superstring theory, or, more concretely, some theoretical aspects in the interaction ...
Barranco López, Alejandro (Fecha de defensa: 2014-10-03)
The study of supersymmetry has led us to a better understanding of field theories, specially in the strong coupling regime. In this thesis we have tried to show this through several examples. These are: - The first of ...
Aprile, Francesco (Fecha de defensa: 2013-09-27)
The sequence of chapters can be divided into three blocks. - The first block contains the introductory chapters. In chapter 1 we illustrate the problem of the high-Tc superconductors making a parallelism between the ...
Baró i Urbea, Jordi (Fecha de defensa: 2015-06-25)
Instead of a linear and smooth evolution, many physical system react to external stimuli in avalanche dynamics. When an out of equilibrium system governed by disorder is externally driven the evolution of internal variables ...
Pavelescu, Irina (Fecha de defensa: 2016-01-29)
This PhD thesis represents an advance in the present understanding of the spatiotemporal control of model plant Arabidopsis thaliana root growth and development. The size and structure of a living organism are tightly ...
Jiménez Tejero, Clara Estela (Fecha de defensa: 2012-03-05)
In this thesis we have studied baryon resonances generated from the dynamical interaction of two hadrons. We are interested on this study as an alternative approach to explain the increasing number of observed charmed ...
Bote Paz, David (Fecha de defensa: 2010-03-25)
En esta tesis se reformulan de manera detallada la primera aproximación de Born relativista con ondas planas (PWBA), para colisiones inelásticas de electrones, positrones y partículas pesadas con átomos o iones, suponiendo ...
Auguet Sangrá, Carlota E. (Fecha de defensa: 1988-07-07)
Hay un gran número de aleaciones que experimentan transformaciones martensíticas termoelásticas (Au-Cd, Ti-Ni, Cu- Zn- Al, Cu- Al- Mo) y, en consecuencia, presentan ciertas propiedades termomecánicas que los convierten en ...
Vidaña Haro, Isaac (Fecha de defensa: 2001-06-08)
The purpose of this thesis is to study, within the framework of Brueckner-Hartree-Fock theory, properties of finite (hypernuclei) and infinite (hyperonic matter) nuclear many-body systems with hyperonic degrees of freedom, ...
Palau Ortin, David (Fecha de defensa: 2016-02-02)
Cells, either as unicellular organisms or as part of a tissue of a multicellular organism, can acquire different functions thanks to their capability of changing their expression state. The enzyme synthesis, cell division ...
Abad García, Marta (Fecha de defensa: 2012-02-16)
In this thesis we study the effects of the dipole-dipole interaction on the physics of ultracold quantum gases, both bosonic and fermionic, within the theoretical framework provided by the mean-field regime. This kind of ...
Picatoste Olloqui, Eduardo (Fecha de defensa: 2016-12-22)
LHCb is one of the four large experiments of the Large Hadron Collider (LHC) based at CERN. The LHCb experiment is taking data at its nominal design luminosity. However, in order to distinguish among models of new physics, ...
Bae, Joonwoo (Fecha de defensa: 2007-04-12)
Quantum cryptography is one of the most important quantum information applications. The present thesis covers several topics on quantum cryptography, such as the security analysis of quantum channels for key distribution ...
Riera Graells, Arnau (Fecha de defensa: 2010-03-18)
THESIS SUMMARY<br/><br/>TEXT:<br/><br/>This thesis is made of two parts. In the first one, the issue of entanglement in many body systems is addressed. The concept of entanglement and some of the recent progress on the ...
Orús Lacort, Román (Fecha de defensa: 2006-07-20)
From the seminal ideas of Feynman and until now, quantum information and computation has been a rapidly evolving field. While at the beginning, physicists looked at quantum mechanics as a theoretical framework to describe ...
Castan i Vidal, Maria Teresa (Fecha de defensa: 1987-04-09)
Els sistemes objecte d'estudi en aquest treball són aliatges metàl·lics d'estructura reticular b.c.c. els quals, a baixes temperatures, experimenten una transició de fase estructural de tipus martensític (bàsicament descrita ...
Planet Latorre, Ramon (Fecha de defensa: 2009-10-23)
La imbibició és un procés de transport de fluids immiscibles en un medi desordenat en el qual el fluid que mulla preferentment el medi desplaça el fluid resident. La interfície que separa aquests dos fluids esta sotmesa a ...
Ramírez de la Piscina Millán, Laureano (Fecha de defensa: 1990-07-06)
La caracterización de sistemas por medio de sus tiempos característicos es sujeto de investigación tanto teórica como experimental. Posiblemente el tiempo característico más conocido y más ampliamente utilizado es el Tiempo ...
Pérez Reche, Francisco José (Fecha de defensa: 2005-04-29)
En esta tesis se han estudiado algunos aspectos de sistemas que presentan transiciones de fase. Para ello se ha empleado tanto un enfoque experimental como teórico. En particular, se han investigado algunas transiciones ...
Ignés i Mullol, Jordi (Fecha de defensa: 1997-06-26)
We have performed pattern formation experiments where a relatively well understood system (flow in a Hele-Shaw cell) is perturbed either by means of a lattice of grooves or by the use of viscoelastic fluids. We have extended ...