Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-04-07
Physics
High Energy Physics
High Energy Physics - Theory
Latex file
Scientific paper
Cosmological inflation is discussed in the realm of Einstein-Cartan-Brans-Dicke (ECBD) gravity by constructing an effective inflaton potential and computing the number of e-folds.It is shown that spin-torsion density contributes to a decrease on the number of e-folds of inflation when the ratio of spin-torsion density to matter density is aprecciable as happens in the Early Universe.Quantum fluctuations of spin and inflatons are also investigated.Our results seems to be in agreement with Palle's proposal that quantum fluctuations of spin may trigger the primordial era of the universe.The main esult of the paper is the appearence of a supersymmetric type inflaton potential from the ECBD gravity where the coefficient of the one-loop type correction is a constant spin-torsion density.
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