You may also look into my book on this subject (World Scientific, 2002)
For cosmological applications of this concept, see Chaotic scalar fields as models for dark energy Phys. Rev. 69D, 123515 (2004) (astro-ph/0310479)
I am generally interested in models of dark matter (axions) and
models of the dark energy of the universe.
Look at my papers in PRL (2013) and Phys. Dark. Univ. (2015) for more details.
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