On the scalar-graviton interaction in noncommutative space / "Investigação sobre a interação entre os campos escalar e gravitacional no espaço não comutativo"

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The formulation of a general relativity theory on noncommutative spaces has been investigated using many different approaches. In this context, a revision of the formalism that describes noncommutative spacetime is made. Next, the interactions between the fields of graviton and scalar is investigated in a commutative space showing an alternative method to rewrite the action of this interaction. Finally, using this method, one obtains the dominant term of the action of graviton interacting with a scalar particle in a noncomutative space. In this way, we are led to consider restricted transformations with infinitesimal parameter wμ(x), such that, ∂μ ˜ wμ = 0. Thus we have the noncommutative version of unimodular gravity.

ASSUNTO(S)

não comutividade gráviton interaction interação graviton noncommutative

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