Abstract
In this paper, we consider a particular form of coupling, namely \(B=\sigma (\dot{\rho _m}-\dot{\rho _\phi })\) in spatially flat (\(k=0\)) Friedmann–Lemaitre–Robertson–Walker (FLRW) space–time. We perform phase-space analysis for this interacting quintessence (dark energy) and dark matter model for different numerical values of parameters. We also show the phase-space analysis for the ‘best-fit Universe’ or concordance model. In our analysis, we observe the existence of late-time scaling attractors.
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Acknowledgements
The authors are thankful to Indian Institute of Engineering, Science and Technology (Shibpur) and Midnapore College (autonomous) for their support.
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Choudhury, B.S., Mondal, H.S. & Chatterjee, D. Some dynamical aspects of interacting quintessence model. Pramana - J Phys 90, 55 (2018). https://doi.org/10.1007/s12043-018-1544-y
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DOI: https://doi.org/10.1007/s12043-018-1544-y
Keywords
- Accelerated expansion of the Universe
- quintessence
- dynamical system
- Friedmann–Lemaitre–Robertson–Walker Universe
- interacting quintessence model
- phase-space analysis
- best-fit Universe
- late-time scaling attractors