Dynamics of multicomponent, multifield quintessence
Journal
Physical Review D
Journal Volume
65
Journal Issue
12
Date Issued
2002
Author(s)
Abstract
The self-consistent dynamics of the multicomponent, N-field quintessence and gravity is formulated as relativistic N-body dynamics, embedded in a static viscous flat space and under the forces given by the interacting Lorentz scalar potential via exchange of field bosons. The Ratra-Peebles power-law potential of effective single-field quintessence can be derived from this ``microscopic'' perspective. In certain situations, the effective dynamics can be made identical to that of single complex quintessence, except that the overall $U(1)$ symmetry is not manifestly broken. The present formulation provides a convenient gauge for analyzing superhorizon perturbations and possibly for quantization of superhorizon fields and gravity together.
Type
journal article