期刊
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
卷 53, 期 2, 页码 469-481出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-013-1831-9
关键词
Dark energy; Interaction; Transient acceleration
资金
- National Basic Science Program (Project 973) of China [2010CB833004]
- NNSF project of China [10935013, 11005165, 11175270]
- Program for New Century Excellent Talents in University
- Fundamental Research Funds for the Central Universities
- CQ CMEC [KJ110523]
The transient acceleration which the current cosmic acceleration is not eternal is possible by introducing the interaction between dark matter and dark energy. If the energy transfer is from dark energy to dark matter, then it is possible to realize the transient acceleration. We study the possibility of transient acceleration by considering two time-dependent phenomenological interaction forms so that the energy transfer increases as the universe evolves. Starting from a simple and extending to a more complicated ansatz, we obtain analytical expressions for the evolutions of the deceleration and the various energy density parameters. We find the ranges of the parameters in the models for a transient acceleration.
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