arXiv:astro-ph/0105479·v2·Astrophysics
Interacting Quintessence
Winfried Zimdahl (Konstanz) · Diego Pavón (Barcelona) · Luis P. Chimento (Buenos Aires)
Abstract
We demonstrate that a suitable coupling between a quintessence scalar field and a pressureless cold dark matter (CDM) fluid leads to a constant ratio of the energy densities of both components which is compatible with an accelerated expansion of the Universe.
Comments: 12 pages, LaTeX; new material on the stability analysis and on the interaction potential added, reference list enlarged and updated; to be published in PLB