Valerio Marra and Francesca Rosati JCAP05(2005)011 doi:10.1088/1475-7516/2005/05/011
Cosmological evolution of alpha driven by a general coupling with quintessence
Valerio Marra and Francesca Rosati
Show affiliationsA general model for the cosmological evolution of the fine structure constant α driven by a typical quintessence scenario is presented. We consider a coupling between the quintessence scalar 
and the electromagnetic kinetic term FμνFμν, given by a general function BF(). We study the dependence of the cosmological Δα(t) upon the functional form of BF() and discuss the constraints imposed by the data. We find that different cosmological histories for Δα(t) are possible within the available constraints. We also find that quasar absorption spectra evidence for a time variation of α, if confirmed, is not incompatible with Oklo and meteorite limits.
- Keywords
-
E-print Number: astro-ph/0501515
Cited: by |
Refers: to
- PACS
- Subjects
- Dates
-
Issue 05 (May 2005)
Received 24 January 2005, accepted for publication 10 May 2005
Published 19 May 2005
-
Cosmological evolution of alpha driven by a general coupling with quintessence
Valerio Marra and Francesca Rosati JCAP05(2005)011
-
RE L3 x-ray absorption study of REO1−xFxFeAs (RE = La, Pr, Nd, Sm) oxypnictides
B Joseph et al 2009 J. Phys.: Condens. Matter 21 432201
-
A bouncing ball model with two nonlinearities: a prototype for Fermi acceleration
Edson D Leonel and Mario Roberto Silva 2008 J. Phys. A: Math. Theor. 41 015104
-
Effects of post-growth annealing on structural and compositional properties of the Co2Cr0.6Fe0.4Al surface and its relevance for the surface electron spin polarization
Jan-Peter Wüstenberg et al 2009 J. Phys. D: Appl. Phys. 42 084016
-
Magnetic fluctuations in nanosized goethite (α-FeOOH) grains
D E Madsen et al 2009 J. Phys.: Condens. Matter 21 016007
-
Results of the PERI survey of SciDAC applications
Bronis R de Supinski et al 2007 J. Phys.: Conf. Ser. 78 012027
-
Spin-half fermions with mass dimension one: theory, phenomenology, and dark matter
D V Ahluwalia-Khalilova and D Grumiller JCAP07(2005)012
-
Original properties of dipole vortices in zero-dimensional ferroelectrics
S Prosandeev et al 2008 J. Phys.: Condens. Matter 20 193201
-
Activity measurements of the radionuclide 57Co for the NMIJ, Japan and the LNE–LNHB, France in the ongoing comparison BIPM.RI(II)-K1.Co-57
C Michotte et al 2009 Metrologia 46 06005
-
Stability of flux compactifications and the pattern of supersymmetry breaking
Kiwoon Choi et al JHEP11(2004)076
Related review articles
What's this?- Does the growth of structure affect our dynamical models of the Universe? The averaging, backreaction, and fitting problems in cosmology
- Scattering amplitudes: the most perfect microscopic structures in the universe
- Loop quantum cosmology: a status report