The variation of the electromagnetic coupling and quintessence

2008/12/28 by M. C. Bento, R. González Felipe, R. Gonzalez Felipe · 6 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Coupling (piping) #Coupling constant #Dark energy #Materials science #Microwave #Particle physics theoretical and experimental studies #Philosophy #Physics #Quantum electrodynamics #Quantum mechanics #Quintessence #Simple (philosophy) #Theoretical physics #Variation (astronomy) #astro-ph

paper · pdf · doi:10.1016/j.physletb.2009.03.021

published in Physics Letters B 674(3), 146-151 (Elsevier BV) · 7 pages, 7 figures

arxiv created 2008/12/28 · openalex publication_date 2009/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The properties of quintessence are examined through the study of the variation of the electromagnetic coupling. We consider two simple quintessence models with a modified exponential potential and study the parameter space constraints derived from the existing observational bounds on the variation of the fine structure constant and the most recent Wilkinson Microwave Anisotropy Probe observations.

Citations

• Re/OsConstraint on the Time Variability of the Fine-Structure Constant
• Brane assisted quintessential inflation with transient acceleration
• Phenomenology of a Realistic Accelerating Universe Using Only Planck-Scale Physics
• Cosmology with a time-variable cosmological 'constant'
• Time variation of G and within models with extra dimensions
• Time-dependent cosmological term
• Quintessence and the Rest of the World: Suppressing Long-Range Interactions
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Constraints on the variations of the fundamental couplings
• Evolution of the fine structure constant driven by dark matter and the cosmological constant
• Cosmological consequences of a rolling homogeneous scalar field
• Time evolution of the fine structure constant in a two-field quintessence model
• Time variation of the fine structure constant driven by quintessence
• Brane inflation