Um Primeiro passo em direção à modificação da gravidade: Teorias Escalar-Tensoriais e f(R)

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DOI:

https://doi.org/10.47456/Cad.Astro.v3n2.37208

Palavras-chave:

Gravidade Modificada, Astrofísica, Cosmologia, Gravitação

Resumo

A relatividade geral, apesar de seus sucessos, é hoje entendida como uma teoria aberta a possibilidades de modificação. Neste artigo buscamos introduzir de maneira didática a base de uma classe de teorias que busca preencher algumas lacunas deixadas pela relatividade geral, as teorias f(R) e escalar-tensoriais. Construímos as teorias a partir de um princípio de ação e obtemos suas equações de campo. Mostramos a equivalência entre as duas teorias e comentamos sobre mecanismos de blindagem. Por fim, mostramos alguns resultados observacionais sobre modificações da relatividade geral dentro do contexto dessas teorias.

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Publicado

26-08-2022

Como Citar

[1]
P. Bessa e T. Ottoni, “Um Primeiro passo em direção à modificação da gravidade: Teorias Escalar-Tensoriais e f(R)”, Cad. Astro., vol. 3, nº 2, p. 128–143, ago. 2022.

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