Cosmological models with constant deceleration parameter in Brans-Dicke theory

Johri, V. B.; Desikan, Kalyani

doi:10.1007/bf02106714

Cited by 142 publications

(75 citation statements)

References 21 publications

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“…We know that the power-law relation between scale factor and scalar eld has been used by Johri and Desikan [39], whereas, Kotub Uddin et al [40] have established a result in the context of f (R) gravity which shows…”

Section: Solutions Of the Eld Equationsmentioning

confidence: 99%

“…Recently, this has been used by Sharif and Shamir [19,20]. Now, we solve equation (20) by using a power-law relation between F and a [19,20,39,40] …”

Section: Solutions Of the Eld Equationsmentioning

confidence: 99%

“…Using equations (21), (24), (25) and (39) in equation (10), the f (R) function for strange quark matter is found to be…”

Section: Strange Quark Matter For Kantowski-sachs Modelmentioning

confidence: 99%

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Kantowski-Sachs Cosmological model with quark and strange quark matter in f(R) theory of gravity

2014

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Abstract:In this paper we have studied the KantowskiSachs cosmological model with the quark and strange quark matter in the f (R) theory of gravity. The general solutions of the eld equations are obtained by assuming the physical condition shear scalar σ is proportional to scalar expansion θ, which leads to the relation B = A n between metric coe cients B and A. The physical and geometrical aspects of the model are also discussed.

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Section: Solutions Of the Eld Equationsmentioning

confidence: 99%

“…Recently, this has been used by Sharif and Shamir [19,20]. Now, we solve equation (20) by using a power-law relation between F and a [19,20,39,40] …”

Section: Solutions Of the Eld Equationsmentioning

confidence: 99%

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Kantowski-Sachs Cosmological model with quark and strange quark matter in f(R) theory of gravity

2014

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“…Johri and Desikan [5] obtained Brans-Dicke cosmological models with constant deceleration parameter in the presence of particle creation. Ram and Singh [6] studied the effect of time dependent bulk viscosity on the radiation of Friedmann models with zero curvature in BD theory.…”

Section: Journal Of Gravitymentioning

confidence: 99%

“…So any one quantity may Journal of Gravity 3 be chosen freely to solve the system of equations. Since the field equations contain and and their derivatives, so without any loss of generality, we shall assume that the BD scalar field is some power of the average scale factor; that is, the power law relation between scale factor a and scalar field has already been used by Johri and Desikan [5] in the context of Robertson Walker Brans-Dicke models.…”

Section: Metric and Field Equationsmentioning

confidence: 99%

LRS Bianchi Type-I Inflationary String Cosmological Model in Brans-Dicke Theory of Gravitation

Venkateswarlu

Satish

2014

Journal of Gravity

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We investigate locally rotational symmetric (LRS) Bianchi type I space time coupled with scalar field. String cosmological models generated by a cloud of strings with particles attached to them are studied in the Brans-Dicke theory. We assume that the expansion scalar is proportional to the shear scalar and also power law ansatz for scalar field. The physical behavior of the resulting model is discussed through different parameters.

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Bianchi type-II space-times with constant deceleration parameter in self creation cosmology

Singh

Kumar

2007

Astrophys Space Sci

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The properties of locally rotationally symmetric Bianchi type-II perfect fluid space-times are analyzed in Barber's second self-creation theory by using a special law of variation for Hubble's parameter that yields a constant value of deceleration parameter. By assuming the equation of state p = γρ, many new solutions are obtained for different era-Zel'dovich, radiation, vacuum and vacuum energy dominated. The solutions with power-law and exponential expansion are discussed. A detailed study of geometrical and physical parameters is carried out. The nature of singularity is also clarified in each case.

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Cosmological models with constant deceleration parameter in Brans-Dicke theory

Cited by 142 publications

References 21 publications

Kantowski-Sachs Cosmological model with quark and strange quark matter in f(R) theory of gravity

Kantowski-Sachs Cosmological model with quark and strange quark matter in f(R) theory of gravity

LRS Bianchi Type-I Inflationary String Cosmological Model in Brans-Dicke Theory of Gravitation

Bianchi type-II space-times with constant deceleration parameter in self creation cosmology

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