Scalar field oscillations contributing to dark energy

Eduard Massó; Francesc Rota; Gabriel Zsembinszki

doi:10.1103/PhysRevD.72.084007

Scalar field oscillations contributing to dark energy

Eduard Massó, Francesc Rota, Gabriel Zsembinszki

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

18 Citations (Scopus)

Abstract

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 language	English
Article number	084007
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	72
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevD.72.084007
Publication status	Published - 15 Oct 2005

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abstract = "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. {\textcopyright} 2005 The American Physical Society.",

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AU - Zsembinszki, Gabriel

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AB - 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.

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DO - 10.1103/PhysRevD.72.084007

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Scalar field oscillations contributing to dark energy

Abstract

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