Natures of Statefinder Parameters and Om Diagnostic for Cardassian Universe in Hořava-Lifshitz Gravity

Khatua, Piyali Bagchi; Debnath, Ujjal

doi:10.1007/s10773-012-1254-z

Cited by 2 publications

(2 citation statements)

References 36 publications

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“…Models of this origin however contain some future singularities which can be solved in principle. But, there are models also, that can explain accelerated expansion without any DE, for instance, Cardassian Universe [65][66][67][68][69][70]. In this model, one need to modify Friedmann equations and therefore having usual matter is enough.…”

Section: Jcap12(2013)031mentioning

confidence: 99%

Interacting ghost dark energy models with variableGand Λ

Sadeghi

Khurshudyan

Movsisyan

et al. 2013

J. Cosmol. Astropart. Phys.

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In this paper we consider several phenomenological models of variable Λ. Model of a flat Universe with variable Λ and G is accepted. It is well known, that varying G and Λ gives rise to modified field equations and modified conservation laws, which gives rise to many different manipulations and assumptions in literature. We will consider two component fluid, which parameters will enter to Λ. Interaction between fluids with energy densities ρ1 and ρ2 assumed as Q = 3Hb(ρ1 + ρ2). We have numerical analyze of important cosmological parameters like EoS parameter of the composed fluid and deceleration parameter q of the model. *

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Section: Jcap12(2013)031mentioning

confidence: 99%

Interacting ghost dark energy models with variableGand Λ

Sadeghi

Khurshudyan

Movsisyan

et al. 2013

J. Cosmol. Astropart. Phys.

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show abstract

“…Models of this origin however contain some future singularities that our Universe should faced, but we do not need to worry, because these are just models and fortunately with appropriate choose of a function we can escape singularities and extend life-time for our Universe. But, there are models also, that can explain accelerated expansion without any DE, for instance, Cardassian Universe [56][57][58][59][60][61]. In this model, we need modify Friedmann equations and having usual matter is enough.…”

Section: Introductionmentioning

confidence: 99%

Phenomenological Varying Modified Chaplygin Gas with Variable G and Λ: Toy Models for Our Universe

2015

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This article motivated by the recent articles and results of two authors. Recently, J. Sadeghi and H. Farahani presented a work [1], where they include viscosity and analyze general model, by this way they extended models considered by M. Khurshudyan [2] and [3]. In this article, We tempt to consider varying Modified Chaplygin gas model in case of variable G and Λ. It is well known, that varying G and Λ gives rise to modified field equations and modified conservation laws. We will consider two different toy models. First model is a Universe with one component phenomenological gas of our consideration, while for the second model we assume existence of a composed fluid of gas and a matter with P = ω(t)ρm. Sign changeable interaction between fluids is accepted. We will analyze important cosmological parameters like EoS parameter of a fluid, deceleration parameter q of the model. *

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Natures of Statefinder Parameters and Om Diagnostic for Cardassian Universe in Hořava-Lifshitz Gravity

Cited by 2 publications

References 36 publications

Interacting ghost dark energy models with variableGand Λ

Interacting ghost dark energy models with variableGand Λ

Phenomenological Varying Modified Chaplygin Gas with Variable G and Λ: Toy Models for Our Universe

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