Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-05-30
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
v1: 12 pages, 5 figures; v2: 7 two-column Revtex4 pages, 5 figures, some expressions improved, typos corrected, some reference
Scientific paper
In this paper, the cosmological dynamics of Brans-Dicke theory in which there are fermions with a coupling to BD scalar field as well as a self-interaction potential is investigated. The conditions that there exists a solution which is stable and represents a late-time accelerated expansion of the universe are found. The variable mass of fermions can not vanish exactly during the evolution of the universe once it exists initially. It is shown that the late-time acceleration depends completely on the self-interaction of the fermionic field if our investigation is restricted to the theory with positive BD parameter $\omega$. Provided a negative $\omega$ is allowed, there will be another two class of stable solutions describing late-time accelerated expansion of the universe.
No associations
LandOfFree
Dynamics of Brans-Dicke cosmology with varying mass fermions 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 Dynamics of Brans-Dicke cosmology with varying mass fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of Brans-Dicke cosmology with varying mass fermions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-161759