Journal
PHYSICAL REVIEW D
Volume 78, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.78.023505
Keywords
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Funding
- Programme Alban, the European Union Programme for Latin America [E06D103604MX]
- Mexican National Council for Science and Technology, CONACYT [192680]
- University of the Basque Country [GIU06/37]
- Spanish Ministry of Education and Culture [FIS2007-61800, FIS2004-0374-E]
- STFC
- STFC [ST/F002335/1, PP/E001033/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F002335/1, PP/E001033/1] Funding Source: researchfish
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Dark energy and dark matter are the dominant sources in the evolution of the late universe. They are currently only indirectly detected via their gravitational effects, and there could be a coupling between them without violating observational constraints. We investigate the background dynamics when dark energy is modeled as exponential quintessence and is coupled to dark matter via simple models of energy exchange. We introduce a new form of dark sector coupling, which leads to a more complicated dynamical phase space and has a better physical motivation than previous mathematically similar couplings.
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