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Research PapersNo Access

COUPLED QUINTESSENCE AND THE COINCIDENCE PROBLEM

Dipartimento di Fisica, Universitá di Napoli "Federico II", and INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Naples, Italy

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Dipartimento di Fisica, Universitá di Napoli "Federico II", and INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Naples, Italy

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Dipartimento di Fisica, Universitá di Napoli "Federico II", and INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Naples, Italy

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https://doi.org/10.1142/S0217732303009940Cited by:118 (Source: Crossref)

Abstract

We consider a model of interacting cosmological constant/quintessence, where dark matter and dark energy behave as, respectively, two coexisting phases of a fluid, a thermally excited Bose component and a condensate, respectively. In a simple phenomenological model for the dark components interaction we find that their energy density evolution is strongly coupled during the universe evolution. This feature provides a possible way out for the coincidence problem affecting many quintessence models.

Keywords:

PACS: 98.80.-k, 98.80.Cq

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Journal cover image

Vol. 18, No. 12

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History

Received 8 January 2003

Keywords