Inflationary Phase in a Generalized Brans-Dicke Theory |
| |
| Authors: | Marcelo S Berman and Luis A Trevisan |
| |
| Institution: | (1) Instituto Albert Einstein/Latinamerica, Av. Candido Hartmann, 575, # 17, 80730-440 Curitiba, PR, Brazil;(2) Universidade Estadual de Ponta Grossa, Demat, CEP 84010-330 Ponta Grossa, PR, Brazil |
| |
| Abstract: | We find a solution for exponential inflation in a Brans-Dicke generalized model, where the coupling “constant” is variable.
While in General Relativity the equation of state is p=−ρ, here we find p=α
ρ, where α<−2/3. The negativity of cosmic pressure implies acceleration of the expansion, even with Λ<0. |
| |
| Keywords: | Inflation Brans-Dicke Scalar-tensor Cosmology Coupling “ constant” Cosmological “ constant” |
| 本文献已被 SpringerLink 等数据库收录！ |
|
