Scalar field oscillations contributing to dark energy

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2005Suggested citation
Massó, Eduard;
Rota, Francesc;
Zsembinszki, Gabriel;
.
(2005)
.
Scalar field oscillations contributing to dark energy.
Physical Review D, 2005, vol. 72, núm. 8, p. 084007.
https://doi.org/10.1103/PhysRevD.72.084007.
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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 < =3, thus contributing to the dark energy that causes the observed acceleration of the universe