Programa de Doctorat en Física Computacional i Aplicada: Envíos recientes
Mostrando ítems 1-20 de 119
The effect of social interactions on collective behavior: from flocking to opinion polarization
(English) Like viruses, information, knowledge, and emotions disseminate through a population, and the social interactions between individuals can give rise to a rich tapestry of collective behavior. Usually, we are able ...
Cerámicas ferroeléctricas libres de plomo basadas en BaTiO3 para almacenamiento de energía y otras aplicaciones relacionadas
(English) In this work, barium titanate (BaTiO3) based lead-free ferroelectric ceramics were synthesized and investigated, viewing their applicability in energy-storage devices. The inclusion of the tin (Sn) ion in the ...
Respiratory viruses in childhood: surveillance, analysis, and modelling of their epidemiological dynamics. The case of Catalonia.
(English) This PhD thesis focused on the characterisation and understanding of the dynamics of SARS-CoV-2, influenza, and respiratory syncytial virus (RSV) in children in Catalonia over the last decade. Through a combination ...
Efectos barocalóricos en cristales plásticos orgánicos y ferroeléctricos
(English) Artificial refrigeration is one of the greatest technological achievements, essential in both industrial and domestic sectors for the preservation of food, medicines, and space cooling. It is expected that the ...
Dynamic social patterns and information transfer in schooling fish
(English) Moving animal groups, such as flocks of birds, schools of fish, insect swarms, herds of mammals, and human crowds, exhibit intricate and highly coordinated behaviors. This thesis explores the underlying mechanisms ...
Quantum Monte Carlo studies of impurities in Bose gases at finite temperature and in the Fermi-hubbard model
(English) This Thesis explores the behavior of impurities embedded in Bose and Fermi systems, addressing both ground-state properties and thermal effects. We investigate these phenomena through advanced computational ...
Barocaloric and multicaloric effects under hydrostatic pressure and electric field
(English) At present, HFC refrigerants with a global warming potential of thousands of times that of CO2, are widely used in air conditioners and, refrigerators. Due to lack of maintenance and poor management, and low or ...
Exploring dissipative systems with non-Hermitian modulations
(English) The aim of this thesis is to explore the effect of non-Hermitian potentials in different nonlinear systems. Specifically, in the different sections of this work we focus on the stabilisation of various states. ...
Experimental study of the coherence of the light emitted by a semiconductor laser with optical feedback
(English) Semiconductor lasers are part of our daily lives, finding applications in telecommunications, sensing, metrology, and biomedicine due to their compact size, efficiency, and versatility. This thesis explores how ...
Viscoelastic behavior of high-entropy metallic glasses
(Català) Els vidres metàl·lics, especialment els d'alta entropia, es caracteritzen per la seva microestructura i propietats mecàniques úniques i, a més, permeten investigar la dinàmica de relaxació en materials desordenats ...
Compact binary millisecond pulsars: X-ray observations and numerical simulations
(English) The thesis deals with millisecond pulsars (MSPs), a fascinating group of neutron stars distinguished by their exceptionally fast rotation periods (Ps < 30 milliseconds) and their strong magnetic fields (of the ...
Transitional coherent structures in shear and centrifugally driven flows
(English) Turbulence is not only omnipresent in our daily lives but also in engineering applications. However, not until the middle of the XXth century researchers began to realize that simple, relatively large-scale ...
Singularities and symmetries on the crossroads of geometry and physics
(English) In this thesis we study several mathematical objects that are essential to formulate and model physical systems. Applying the tools provided by differential geometry, we develop and analyze different mathematical ...
Historical copper and iron coloured glazes and glasses
(English) Coloured glazes and glasses have attracted human interest since antiquity for their aesthetic appeal and multiple functionalities. As indicators of technological progress, artistic expression, and social ...
Hydrodynamic models of accretion onto rotating compact stars
(English) Hydrodynamic models are essential for our understanding of the physics of stellar explosions, and specifically, for their potential contribution to the Galactic chemical abundances. In this Work, a one-dimensional ...
Nonlinear optics at nanoscale: frequency conversion at interfaces
(English) The use of semiconductors, metals, or ordinary dielectrics in the process of fabrication of nanodevices is at the front edge of nowadays technology. In the last decade an impressive technological progress has ...
Study of relaxation phenomena and local structure evolution in metallic glasses by means of Mössbauer and mechanical spectroscopy
(English) New research shows that global demand for alloys with unique properties for various applications increased drastically, and among all them the demand for high entropy and metallic glasses in the industry is ...
Three-dimensional SPH simulations of the interaction between the nova ejecta and the companion star
(English) Classical and Recurrent novae are thermonuclear explosions hosted by accreting white dwarfs in stellar binary systems. Material piles up on top of the white dwarf star under mildly degenerate conditions, driving ...
Theoretical and experimental investigation on the visible-light controlled functional properties in charged domain wall ferroelectrics
(English) Optical control of ferroelectric properties has been attracted a growing interest as an alternative to the conventional control by applied electric fields. However, the major drawback for achieving an effective ...
Collective motion and collective decision-making in animal groups : from scholling fish to swarming robots
(English) Collective behavior in animals is ubiquitous in nature. It emerges from the self-organization of interacting individuals within a group. What makes collective behavior so interesting is that the behavior of the ...
