Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1995-04-15
Phys.Rev.D52:6730-6738,1995
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
19 pages, LaTeX
Scientific paper
10.1103/PhysRevD.52.6730
In Brans-Dicke theory the Universe becomes divided after inflation into many exponentially large domains with different values of the effective gravitational constant. Such a process can be described by diffusion equations for the probability of finding a certain value of the inflaton and dilaton fields in a physical volume of the Universe. For a typical chaotic inflation potential, the solutions for the probability distribution never become stationary but grow forever towards larger values of the fields. We show here that a non-minimal conformal coupling of the inflaton to the curvature scalar, as well as radiative corrections to the effective potential, may provide a dynamical cutoff and generate stationary solutions. We also analyze the possibility of large nonperturbative jumps of the fluctuating inflaton scalar field, which was recently revealed in the context of the Einstein theory. We find that in the Brans--Dicke theory the amplitude of such jumps is strongly suppressed.
Garcia-Bellido Juan
Linde Andrei
No associations
LandOfFree
STATIONARY SOLUTIONS IN BRANS-DICKE STOCHASTIC INFLATIONARY COSMOLOGY does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with STATIONARY SOLUTIONS IN BRANS-DICKE STOCHASTIC INFLATIONARY COSMOLOGY, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and STATIONARY SOLUTIONS IN BRANS-DICKE STOCHASTIC INFLATIONARY COSMOLOGY will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-254151