Kinetic k-essence and quintessence

2007/05/29 by Roland de Putter, Eric V. Linder · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Earth Systems and Cosmic Evolution #astro-ph #hep-th

paper · pdf · doi:10.1016/j.astropartphys.2007.05.011

published as Astropart.Phys.28:263-272,2007 · 11 pages, 11 figures; v2 added references, matches Astropart. Phys. version

arxiv created 2007/05/29 · openalex publication_date 2007/06/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Dark energy models with non-canonical kinetic energy terms, k-essence, can have dynamical and sound speed properties distinct from canonical scalar fields, quintessence. Concentrating on purely kinetic term Lagrangians, which can be technically natural, we investigate limits on the equation of state dynamics and sound speed behaviors and the extent to which these models can be separated from quintessence.

Citations

• Causality and superluminal behavior in classical field theories: Applications tok-essence theories and modified-Newtonian-dynamics-like theories of gravity
• Field Theory of Tachyon Matter
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Dynamics of dark energy
• k-Inflation

Cited by

• Unified Dark Matter Scalar Field Models
• Purely kinetic coupled gravity
• Expanding Universe: slowdown or speedup?