Journal article
Emergent dark energy from dark matter
- Abstract:
- We consider the cosmological dynamics of a scalar field in a potential with multiple troughs and peaks. We show that the dynamics of the scalar field will evolve from light dark matter–like behavior (such as that of a light axion) to a combination of heavy dark matter–like and dark energy–like behavior. We discuss the phenomenology of such a model, explaining how it can give rise to the cosmological constant as well as how it can decouple the dark sector densities between the time of recombination and today, for both the homogeneous background and perturbations. The final form of the dark matter is axionlike, but with abundance and primordial isocurvature modes taking very different values from traditional, axionic, dark matter.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 416.1KB, Terms of use)
-
- Publisher copy:
- 10.1103/PhysRevD.97.121301
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 97
- Issue:
- 12
- Article number:
- 121301(R)
- Publication date:
- 2018-06-29
- Acceptance date:
- 2018-03-11
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Keywords:
- Pubs id:
-
pubs:824004
- UUID:
-
uuid:da0b2098-58b2-4a58-8671-bfa60cb22f8f
- Local pid:
-
pubs:824004
- Source identifiers:
-
824004
- Deposit date:
-
2018-03-11
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2018
- Notes:
- Copyright © 2018 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevD.97.121301
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