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Entropy 2017, 19(7), 327; doi:10.3390/e19070327

Testing the Interacting Dark Energy Model with Cosmic Microwave Background Anisotropy and Observational Hubble Data

1
Department of Physics, Liaoning Normal University, Dalian 116029, China
2
Institute of Theoretical Physics, School of Physics, Dalian University of Technology, Dalian 116024, China
3
College of Medical Laboratory, Dalian Medical University, Dalian 116044, China
*
Author to whom correspondence should be addressed.
Received: 26 May 2017 / Revised: 12 June 2017 / Accepted: 23 June 2017 / Published: 17 July 2017
(This article belongs to the Special Issue Dark Energy)
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Abstract

The coupling between dark energy and dark matter provides a possible approach to mitigate the coincidence problem of the cosmological standard model. In this paper, we assumed the interacting term was related to the Hubble parameter, energy density of dark energy, and equation of state of dark energy. The interaction rate between dark energy and dark matter was a constant parameter, which was, Q = 3 H ξ ( 1 + w x ) ρ x . Based on the Markov chain Monte Carlo method, we made a global fitting on the interacting dark energy model from Planck 2015 cosmic microwave background anisotropy and observational Hubble data. We found that the observational data sets slightly favored a small interaction rate between dark energy and dark matter; however, there was not obvious evidence of interaction at the 1 σ level. View Full-Text
Keywords: dark energy; interaction; observational constraint dark energy; interaction; observational constraint
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Yang, W.; Xu, L.; Li, H.; Wu, Y.; Lu, J. Testing the Interacting Dark Energy Model with Cosmic Microwave Background Anisotropy and Observational Hubble Data. Entropy 2017, 19, 327.

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