Quintessential Adjustment of the Cosmological Constant

Preprint

31 March 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0003287

Abstract

We construct a time dependent adjustment mechanism for the cosmological "constant" which could be at work in a late Friedmann-Robertson-Walker universe dominated by quintessence and matter. It makes use of a Brans-Dicke field that couples to the evolving standard-model vacuum energy density. Our explicit model possesses a stable late-time solution with a fixed ratio of matter and field energy densities. No fine tuning of model parameters or initial conditions is required.

Keywords

QUINTESSENTIAL ADJUSTMENT
COSMOLOGICAL CONSTANT
DEPENDENT ADJUSTMENT
ADJUSTMENT MECHANISM
ENERGY DENSITIES
STANDARD MODEL
FIXED RATIO
DICKE

All Related Versions

Version 1, 2000-03-29, ArXiv
Version 2, 2000-03-31, ArXiv
Published version: Physical Review Letters, 85 (16), 3339.

This publication has 0 references indexed in Scilit: