Quantum scalar field in D-dimensional de Sitter spacetimes
Universidade Estadual do Ceará, Faculdade de Educação, Ciências e Letras do Sertão Central R. Epitácio Pessoa, 2554, 63900-000 Quixadá, Ceará, Brazil
2 Departamento de Física, Universidade Federal do Ceará, - Caixa Postal 6030, Campus do Pici, 60455-760, Fortaleza, Ceará, Brazil
Accepted: 28 February 2012
In this work we investigate the quantum theory of scalar fields propagating in a D-dimensional de Sitter spacetime. The method of dynamic invariants is used to obtain the solution of the time-dependent Schrödinger equation. The quantum behavior of the scalar field in this background is analyzed, and the results generalize previous ones found in the literature. We point that the Bunch-Davies thermal bath depends on the choice of D and the conformal parameter ξ. This is important in extra-dimension physics, as in the Randall-Sundrum model.
PACS: 11.10.Kk – Field theories in dimensions other than four
© EPLA, 2012