Viscous Ricci Dark Energy Cosmological Models in Brans-Dicke Theory
The whole article deals with the analysis of the cosmic model of Ruban's space-time in the context of a bulk viscosity impact in the form of Ricci dark energy within the framework Brans-Dicke theory (Brans and Dicke, Phys. Rev. 124, 925 (1961)). We believe that outer space is filled with dark m...
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Zusammenfassung: | The whole article deals with the analysis of the cosmic model of Ruban's
space-time in the context of a bulk viscosity impact in the form of Ricci dark
energy within the framework Brans-Dicke theory (Brans and Dicke, Phys. Rev.
124, 925 (1961)). We believe that outer space is filled with dark matter and
viscous Ricci dark energy (VRDE) under the pressureless situation. The velocity
and rate at which the Universe is expanding are presumed to be proportional to
the coefficient of total bulk viscosity, is in the form, -- , are the
constants. To solve the RDE model's field equations, we utilize the relation
among the metric potentials and also the power-law relation among the average
scale factor a(t) and scalar field . To examine the evolutionary dynamics of
the Universe, we investigate the deceleration parameter(q), jerk parameter(j),
EoS parameter , Om(z), stability of the obtained models through the square
speed of the sound, wde wde' plane, statefinder parameter planes (r, s) and (q,
r) and presented via graphical representation. By the end of the discussion,
VRDE model was found to be compatible with the present accelerated expansion of
the Universe. |
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DOI: | 10.48550/arxiv.2311.00736 |