Tracking quintessence and k-essence in a general cosmological background

Abstract

We derive conditions for stable tracker solutions for both quintessence and k-essence in a general cosmological background, H^2 \propto f(ρ). We find that tracker solutions are possible only when η= d ln f /d ln ρis constant, aside from a few special cases, which are enumerated. Expressions for the quintessence or k-essence equation of state are derived as a function of ηand the equation of state of the dominant background component.

arXiv comment6 pages, no figures

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Cited by in corpus (16)

• Unified Dark Matter in Scalar Field Cosmologies
• Pure kinetic k-essence as the cosmic speed-up
• Dark Energy in Practice
• Quintessence reconstructed: new constraints and tracker viability
• Attractor scenarios and superluminal signals in k-essence cosmology
• Reconstructing interacting entropy-corrected holographic scalar field models of dark energy in non-flat universe
• Phase-space analysis of a class of k-essence cosmology
• First-order formalism for dark energy and dust
• Cosmological Scaling Solutions with Tachyon:Modified Gravity Model
• Restrictions on purely kinetic k-essence
• Scaling solutions as Early Dark Energy resolutions to the Hubble tension
• Thawing k-essence dark energy in the PAge space
• Tracking $f(R)$ cosmology
• Statefinder diagnosis of nearly flat and thawing non-minimal quintessence
• Crossing the phantom divide with k-essence in brane-worlds
• Toward solving the cosmological constant problem by embedding