Probing the dynamical system and thermal behaviours of the model, \(\Lambda_0+3 \beta H^2.\)

Probing the dynamical system and thermal behaviours of the model, \(\Lambda_0+3 \beta H^2.\)

In this work we study the cosmological evolution of a two component model with non-relativistic dark matter and decaying vacuum of the form \(\Lambda = \Lambda_0 + 3 \beta H^2.\) We contrast the model the model with the supernovae data and found that the model parameter \(\beta=-0.010\) when the int...

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Veröffentlicht in:arXiv.org 2018-10
Hauptverfasser: Jayadevan, A P, Mukesh, M, Akbar, Shaima, Mathew, Titus K
Format: Artikel
Sprache:eng
Schlagworte:
Convexity
Critical point
Dark matter
Deceleration
Dynamical systems
Interaction parameters
Mathematical models
Supernovae
Systems analysis
Thermal evolution
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Zusammenfassung:In this work we study the cosmological evolution of a two component model with non-relativistic dark matter and decaying vacuum of the form \(\Lambda = \Lambda_0 + 3 \beta H^2.\) We contrast the model the model with the supernovae data and found that the model parameter \(\beta=-0.010\) when the interaction parameter is zero and is \(\beta=-0.002\) when \(b=0.001.\) The thermal evolution study of the model indicates that it obeys the generalized second of entropy and also satisfies the convexity condition, \(\ddot S
ISSN:2331-8422