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Doctoral Thesis
DOI
https://doi.org/10.11606/T.43.2018.tde-07122018-135435
Document
Author
Full name
Samuel Mendes Sanches Junior
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2018
Supervisor
Committee
Navarra, Fernando Silveira (President)
Grassi, Frederique Marie Brigitte Sylvie
Horvath, Jorge Ernesto
Pino, Elisabete Maria de Gouveia Dal
Silveira, Francisco Eugenio Mendonça da
Title in Portuguese
Equações de estado do plasma de quarks e glúons e suas aplicações
Keywords in Portuguese
campo magnético.
equação de estado
plasma de quarks e glúons
Abstract in Portuguese
O plasma de quarks e glúons é um assunto que vem sendo muito estudado nos últimos anos, devido ao advento dos colisores de partículas modernos e os avanços nas pesquisas relacionadas a estrelas compactas. Assim, nesta tese tivemos como objetivo principal o estudo deste plasma. Para isto, aprimoramos uma equação de estado desenvolvida pelo nosso grupo, na qual foi adicionada a interação com um campo magnético constante. De posse desta nova equação de estado, que é formulada a partir da técnica de aproximação de campo médio, fizemos diversas aplicações. Em particular, no estudo de propagação de ondas lineares e não lineares, com o objetivo de verificar se a causalidade e estabilidade são respeitadas. Resolvemos a equação de Tolman-Oppenheimer-Volkoff para obter o diagrama massa-raio para uma estrela de quarks compacta. Estudamos como é a evolução temporal do Universo primordial resolvendo as equações de Friedmann e a evolução temporal de bolhas do plasma de quarks e glúons no gãs de hádrons (e também de bolhas de gás de hádrons no plasma de quarks e glúons) utilizando a equação de Rayleigh-Plesset relativística.
Title in English
Quark gluon plasma equation of state and applications
Keywords in English
equation of state
magnetic field
quark gluon plasma
Abstract in English
The quark gluon plama is a subject that has been actively studied in recent years, due to the advent of modern particle colliders and advances in research related to compact stars. Thus, in this thesis we had as main goal the study of this plasma. For this, we improved an equation of state developed by our group, where an interaction with a constant magnetic field was added. With this new equation of state, which is formulated from the mean field approximation technique, we made several applications. As in the study of propagation of linear and non-linear waves, with the goal of verifying whether the causality and stability are respected. We solved the Tolman-Oppenheimer-Volkoff equation to obtain the mass-radius diagram for a compact quark star. We study how the temporal evolution of the primordial Universe by solving Friedmanns equations and the temporal evolution of bubbles of quark gluon plasma in a hadrons gas (and also of bubbles of hadrons gas in a quark gluon plasma) using the relativistic Rayleigh-Plesset equation.
 
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Tese_Samuel_Final.pdf (1.58 Mbytes)
Publishing Date
2018-12-07
 
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