Scalar field oscillations contributing to dark energy

Eduard Massó, Francesc Rota, Gabriel Zsembinszki

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)


We use action-angle variables to describe the basic physics of coherent scalar field oscillations in the expanding universe. These analytical mechanics methods have some advantages, like the identification of adiabatic invariants. As an application, we show some instances of potentials leading to equations of state with p<-ρ/3, thus contributing to the dark energy that causes the observed acceleration of the universe. © 2005 The American Physical Society.
Original languageEnglish
Article number084007
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number8
Publication statusPublished - 15 Oct 2005


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