Vol 3, No 2

Early Tracking Behavior in Small-field Quintessence Models

Wei Wang, Bo Feng

Abstract

Abstract We study several quintessence models which are exotic at Q = 0, and use a simple constraint Q≥ H/2π, to check when they enter the tracking regime, disregarding the details of inflation. We find that it can also give strong constraints for V=V0Q-α, which has to enter the tracking regime after &ln; z ∼ 10, while for the supergravity model V=V0Q-α exp (kQ2/2), the constraint is much weaker. For the exponential form of inverse power-law potential V=V0 exp (λ/Q), it exhibits no constraints.

Keywords

Keywords cosmology: theory

Full Text
DOI
Refbacks

  • There are currently no refbacks.