Um Primeiro passo em direção à modificação da gravidade: Teorias Escalar-Tensoriais e f(R)
DOI:
https://doi.org/10.47456/Cad.Astro.v3n2.37208Palabras clave:
Gravidade Modificada, Astrofísica, Cosmologia, GravitaçãoResumen
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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Derechos de autor 2022 Pedro Bessa, Túlio Ottoni
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
