DBI Galileon and late time acceleration of the universe

2012/08/06 by Sampurnanand, Sampurn Anand, Anjan A. Sen · 1 citation
Physics and Astronomy · #Acceleration #Astronomy #Black Holes and Theoretical Physics #Born–Infeld model #Brane #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dirac (video compression format) #Field (mathematics) #Galaxies: Formation, Evolution, Phenomena #Mathematical physics #Minkowski space #Particle physics #Physics #Quantum electrodynamics #Quantum mechanics #Theoretical physics #Universe #astro-ph.CO #gr-qc #hep-th

paper · pdf · doi:10.1088/1475-7516/2012/12/019

16 pages, 7 eps figures, Latex Style, new references added, corrected missing references

arxiv created 2012/08/06 · openalex publication_date 2012/12/13 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We consider 1+3 dimensional maximally symmetric Minkowski brane embedded in a 1+4 dimensional maximally symmetric Minkowski background. The resulting 1+3 dimensional effective field theory is of DBI (Dirac-Born-Infeld) Galileon type. We use this model to study the late time acceleration of the universe. We study the deviation of the model from the concordance ΛCDM behaviour. Finally we put constraints on the model parameters using various observational data.

Citations

• Cosmological Constant - the Weight of the Vacuum
• DBI and the Galileon reunited
• Cosmology with a time-variable cosmological 'constant'
• Phantom dark energy models with a nearly flat potential
• Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors
• The cosmological constant and dark energy
• New constraints on cosmological parameters and neutrino properties using the expansion rate of the Universe toz∼ 1.75
• The Cosmological Constant
• Dynamics of dark energy
• SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: SKY MAPS, SYSTEMATIC ERRORS, AND BASIC RESULTS
• The galileon as a local modification of gravity
• The Case for a Positive Cosmological Lambda-term
• Covariant Galileon
• Galileon inflation
• DBI-essence

Cited by

• DBI Galileons in the Einstein frame: Local gravity and cosmology