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Master's Dissertation
DOI
https://doi.org/10.11606/D.76.2008.tde-07042008-201206
Document
Author
Full name
William Couto Corrêa de Lima
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2008
Supervisor
Committee
Vanzela, Daniel Augusto Turolla (President)
Koberle, Roland
Matsas, George Emanuel Avraam
Title in Portuguese
Análogos de gravitação semi-clássica em física da matéria condensada
Keywords in Portuguese
Acústica
Buracos mudos
Buracos negros
Cosmologia
Efeito Hawking
Gravitação semi-clássica
Mecânica quântica
Relatividade geral
Teoria quântica de campos em espaços curvos
Abstract in Portuguese
A presente dissertação tem como objeto de estudo sistemas da física da matéria condensada que sejam capazes de simular sistemas gravitacionais, tais como buracos negros e universos em expansão, onde processos quânticos tomam parte. Neste estudo nos debruçamos principalmente sobre o modelo do fluido e condensados de Bose-Einstein. No modelo do fluido exploramos a geometria efetiva que surge e os problemas de back-reaction e dos modos trans-planckianos de campos quânticos. No modelo baseado em condensados exploramos sua faceta cosmológica e a possibilidade de campos maciços. Além destes dois modelos de grande relevância na literatura, ainda expomos os análogos em cordas elásticas e os baseados em ondas na superfícies de fluidos e uma análise geral baseada no formalismo lagrangeano para campos.
Title in English
Analogue models of semi-classical gravity in condensate matter physics
Keywords in English
Acustic
Black holes
Cosmology
Dumb holes
General relativity
Hawking effect
Quantum field theory in curved spaces
Quantum mechanics
Semiclassical gravitation
Abstract in English
This dissertation has as object of study systems of condensate-matter physics which can simulate gravitational systems like black holes and expanding universes where quantum processes take place. In this study we lay attention mainly on the fluid model and on Bose-Einstein-condensate-based models. In the fluid model we explore the features of the emergent geometry and other problems like the back-reaction and the trans-planckian modes of quantum fields. In the condensate-based models we explore their cosmological aspects and the possibility for massive fields. Moreover, we shall present two other models, the elastic string and the surface-wave-based models in fluids, and a very general analysis based on the Lagrangean formalism for fields.
 
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dissertacao.pdf (827.55 Kbytes)
Publishing Date
2008-04-09
 
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