Transient acceleration from a hybrid Chaplygin gas

Abstract

We extend the Chaplygin gas model for dark matter and dark energy unification by promoting the Chaplygin gas parameter A to the potential for an extra scalar with canonical kinetic energy. The hybrid model allows for accelerated Hubble expansion to be a transient effect around redshift zero.

arXiv comment8 pages, 3 figures, title changed, discussion expanded, typos corrected, references added, results unchanged

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Cited by in corpus (11)

• Dynamics of dark energy
• Interacting Chaplygin gas
• Dark Energy in Practice
• Cosmological tachyon condensation
• Gravitationally Collapsing Shells in (2+1) Dimensions
• Chaplygin Gas Cosmology - Unification of Dark Matter and Dark Energy
• Generalized models of unification of dark matter and dark energy
• Inflection Point Quintessence
• Do current observations support transient acceleration of our universe?
• Observational constraints on inflection point quintessence with a cubic potential
• A class of transient acceleration models consistent with Big Bang Cosmology