Dynamics of Multi-Component, Multi-Field Quintessence
نویسنده
چکیده
Self-consistent dynamics of the multi-component, 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 exchanges 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 for 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. PACS numbers: Typeset using REVTEX
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