Scalar field oscillations contributing to dark energy
Journal Article
·
· Physical Review. D, Particles Fields
- Grup de Fisica Teorica and Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona 08193 Bellaterra, Barcelona (Spain)
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<-{rho}/3, thus contributing to the dark energy that causes the observed acceleration of the universe.
- OSTI ID:
- 20713728
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 72, Issue 8; Other Information: DOI: 10.1103/PhysRevD.72.084007; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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