Journal article
Dark energy with the help of interacting dark sectors
- Abstract:
- We analyze theories that do not have a de Sitter vacuum and cannot lead to slow-roll quintessence, but which nevertheless support a transient era of accelerated cosmological expansion due to interactions between a scalar ๐ and either a hidden sector thermal bath, which evolves as dark radiation, or an extremely light component of dark matter. We show that simple models can explain the present-day dark energy of the Universe consistently with current observations. This is possible both when ๐โs potential has a hilltop form and when it has a steep exponential runaway, as might naturally arise from string theory. We also discuss a related theory of multifield quintessence, in which ๐ is coupled to a sector that sources a subdominant component of dark energy, which overcomes many of the challenges of slow-roll quintessence.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 1.7MB, Terms of use)
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- Publisher copy:
- 10.1103/physrevd.110.023533
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 110
- Issue:
- 2
- Article number:
- 023533
- Publication date:
- 2024-07-22
- Acceptance date:
- 2024-06-11
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Language:
-
English
- Pubs id:
-
2018525
- Local pid:
-
pubs:2018525
- Deposit date:
-
2024-08-02
Terms of use
- Copyright holder:
- Gomes et al
- Copyright date:
- 2024
- Rights statement:
- ยฉ The Author(s) 2024. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published articleโs title, journal citation, and DOI. Funded by SCOAP3 .
- Licence:
- CC Attribution (CC BY)
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