Stochastic emergence of inflaton fluctuations in a SdS primordial universe with large-scale repulsive gravity from a 5D vacuum
arXiv:1005.1232 · doi:10.1140/epjp/i2011-11056-2
Abstract
We develop a stochastic approach to study scalar field fluctuations of the inflaton field in an early inflationary universe with a black-hole (BH), which is described by an effective 4D SdS metric. Considering a 5D Ricci-flat SdS static metric, we implement a planar coordinate transformation, in order to obtain a 5D cosmological metric, from which the effective 4D SdS metric can be induced on a 4D hypersurface. We found that at the end of inflation, the squared fluctuations of the inflaton field are not exactly scale independent and becomes sensitive with the mass of the BH.
version accepted in European Physical Journal Plus
References in corpus (4)
- Stochastic gravitoelectromagnetic inflation
- The Landscape of Theoretical Physics: A Global View; From Point Particles to the Brane World and Beyond, in Search of a Unifying Principle
- Extended General Relativity: large-scale antigravity and short-scale gravity with ω=-1 from five dimensional vacuum
- Primordial SdS universe from a 5D vacuum: scalar field fluctuations on Schwarzschild and Hubble horizons