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Doctoral Thesis
DOI
10.11606/T.43.2016.tde-26042016-140425
Document
Author
Full name
Iúri Baranov Pereira Raymundo
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Lima, José Ademir Sales de (President)
Fabris, Julio Cesar
Funchal, Renata Zukanovich
Mendes, Carlos Molina
Zimdahl, Winfried Ernst Wilhelm
Title in Portuguese
Formulação cinética para cosmologias com criação de matéria e aplicações
Keywords in Portuguese
Cosmologia
Matéria Escura
Teoria Cinética
Abstract in Portuguese
Nesta tese, estudamos cosmologias com criação de matéria como alternativa ao modelo $\Lambda$CDM. Generalizamos a equação de Boltzmann relativística com um termo de produção de partículas fenomenológico, de tal forma que a equação resultante seja capaz de reobter os resultados da termodinâmica de não-equilíbrio das equações de balanço e evolução de temperatura. Após obter o termo correto para a equação generalizada de Boltzmann, investigamos como o formalismo proposto altera a equação de evolução de relíquias cósmicas na presença de criação gravitacional de partículas.
Title in English
Kinetic Formulation for Cosmologies with Matter Creation and Applications
Keywords in English
Cosmology
Dark Matter
Kinetic Theory
Abstract in English
In this thesis, we study matter creation cosmologies as an alternative to the $\Lambda$CDM model. We generalize the relativistic Boltzmann equation with a phenomenological particle production term, in such a way that the resulting equation will be able to reproduce the non-equilibrium thermodynamics results of the balance equations and temperature evolution law. After obtaining the correct term to the generalized Boltzmann equation, we investigate how the proposed formalism changes the cosmic relic evolution equation in the presence of gravitational particle creation.
 
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Publishing Date
2016-05-09
 
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