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  • CESAR, Alan de Gois; http://lattes.cnpq.br/8749324952598568 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - FísicaUNIFEI, 2022-03-03)
    A gravitational collapse model is constructed by analyzing the evolution of a hypersurface that separates two regions of a manifold. A Vaidya type metric is used for the exterior region and for the interior region the ...
  • SANTANA, Leandro; http://lattes.cnpq.br/7320009315739681 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - FísicaUNIFEI, 2020-08-27)
    In this dissertation, after a brief review of the elements present in differential geometry, we present Penrose’s Singularity Theorem (1965) and rewrite it from the perspective of disformal transformations. Without ...
  • SANTOS, Maria Eduarda Antunes dos; http://lattes.cnpq.br/6244647057170283 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - FísicaUNIFEI, 2024-02-29)
    This work analyzed the behavior of an inflationary model driven by a scalar field with a polynomial potential. For that, it was analyzed a monomial potential type and then an investigation of effects due to an introduction ...
  • FERNANDES FILHO, Ricardo Alexandre; http://lattes.cnpq.br/5218561645780587 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - FísicaUNIFEI, 2024-02-26)
    In this thesis, a qualitative analysis is proposed on how theories related to gravity have changed over time until reaching the well-known modified theories of gravitation, demonstrating the power they hold. The aim is ...
  • SALVADOR, Victor Manuel Neyra; http://lattes.cnpq.br/3830097015558224 (Universidade Federal de ItajubáBrasilIFQ - Instituto de Física e QuímicaPrograma de Pós-Graduação: Mestrado - FísicaUNIFEI, 2024-02-29)
    The locality principle is respected by the special and general theory of relativity. Consequently, the speed of light is the maximum speed at which information can travel. However, by the Hubble-Lemaitre law, we know ...