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Mostrando ítems 1-14 de 14
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Autogravitação para espaços-tempos estáticos e isotrópicos com aplicações a modelos de interesse astrofísico
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 24/11/2012)In this work I consider the equations of self-gravitation for collisionless, static and isotropic systems in the context of the theory of general relativity. From these I present the form of the distribution function when ... -
Caracterização do perfil de fluxo atômico de um conjunto de microtubos para aplicação em experimento de átomos frios
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 18/12/2019)In this monograph, we will initially discuss notions about the main cooling techniques used in cold atom experiments. This will be presented in order to motivate the main theme of this work, the characterization of the ... -
Fabricação de um circuito lock-in para a estabilização de frequência de diodo
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 30/06/2021)A cold atom experiment requires lasers with stable frequencies. In this work, we fabricated and characterized a lock-in circuit for frequency stabilization of a laser diode. The principle of stabilizing a physical quantity ... -
O problema Fermi-Pasta-Ulam-Tsingou: equipartição de energia vista através de simulações computacionais
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 25/11/2021)The equipartition of energy is one of the most fundamental results of Statiscal Mechanics, appearing in a broad range of physical systems. In order to explore this concept, two computational experiments of the Fermi-Past ... -
Características luminescentes do sistema relaxor PLMN-13PT dopado com érbio em transições de fase polar
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 25/11/2021)Structural and polar phase transitions are important for materials studies, specially for normal and relaxor ferroelectrics. These states influence the materials physical characteristics, which are observable by many ... -
Simulações de Monte Carlo para estudar a propagação da luz através da pele de diferentes fototipos
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 26/11/2021)In the last years, there has been an increase in interest in using light as a treatment, and it has been shown that this is a great alternative to more traditional treatments. Due to the complex nature of photons, it is ... -
Células solares: princípios e investigação do uso de redes de nanofios de SnO2 para aumento de eficiência
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 26/11/2021)In this work, a review was carried out on the functioning of commercially available solar cells and methods used to improve their efficiency, focusing in the final part on the proposal to apply the use of a network of SnO2 ... -
Introdução ao estudo dos buracos negros na relatividade geral
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 28/04/2022)This monograph arose from the author's interest in understanding one of the most exotic objects of study in Physics: black holes. With this in mind, this work aimed to introduce the study of black holes in the context of ... -
Collective effects in biphoton generation of a four-wave-mixing process
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 28/04/2022)The generation of biphotons remains an important field of research, as several applications require such sources. For instance, some of their properties are fundamental in quantum communication, quantum computing, and ... -
A formulação de Eisenhart para teorias de campos escalares
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 30/09/2022)In the present work, we discuss the Eisenhart lift, introduced by L. P. Eisenhart in 1928, when dealing with analytical mechanics. The core idea behind the lift is to look at a lagrangian mechanical or field system that ... -
Influência da geometria de anéis para geração de campos magnéticos inomogêneos em dispositivos supercondutores
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 06/04/2023)Conducting materials transport electric currents very effectively due to their low resistivity. A conductor's electric current distribution induces a magnetic field around it, which the Ampère-Maxwell Law can describe. On ... -
Relatividade geral, buracos negros e ondas gravitacionais
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 11/07/2023)In this study, firstly, the basic ideas, concepts and principles of Special Relativity are introduced, to help understand the construction of General Relativity. The second chapter is an introduction to the mathematical ... -
Caracterização de filmes finos de ZnO:Ho crescidos por spray-pirólise
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 25/01/2024)The research investigation on the doping effects of zinc oxide thin films (ZnO) with the rare earth ion Holmium (Ho3+) and the determination of an optimal doping condition for the luminescence of the doping element. The ... -
Formalismo de Input-Output aplicado em cavidades ópticas e geração de fótons individuais
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 09/02/2024)This monograph will present the investigation of a possible emitter of the single photon state. This type of source is currently essential for information processing, especially for the development of quantum sensing, ...