, 90:55 | Cite as

Some dynamical aspects of interacting quintessence model

  • Binayak S Choudhury
  • Himadri Shekhar Mondal
  • Devosmita Chatterjee


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.


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 


98.80.Hw 98.80.-k 95.36.+x 



The authors are thankful to Indian Institute of Engineering, Science and Technology (Shibpur) and Midnapore College (autonomous) for their support.


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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  • Binayak S Choudhury
    • 1
  • Himadri Shekhar Mondal
    • 2
  • Devosmita Chatterjee
    • 1
  1. 1.Department of Basic and Applied SciencesIndian Institute of Engineering, Science and TechnologyShibpurIndia
  2. 2.Department of MathematicsMidnapore College (Autonomous)MedinipurIndia

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