Time-Dependent Density of Modified Cosmic Chaplygin Gas with Variable Cosmological Constant in Non-Flat Universe

Sadeghi, J.; Pourhassan, B.; Khurshudyan, Martiros; Farahani, H.

doi:10.1007/s10773-013-1881-z

Cited by 40 publications

(30 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It may be noted that thermal fluctuations can change the behavior of thermodynamical systems [61][62][63][64][65][66][67][68][69][70][71][72][73][74], and so it is expected to have direct effect on the stability of this system. It would also be interesting to analyze this holographic formalism for other models of dark energy, such as the generalized Chaplygin gas [75][76][77][78][79][80], generalized cosmic Chaplygin gas [81][82][83], modified Chaplygin gas [84][85][86][87][88][89][90], modified cosmic Chaplygin gas [91][92][93][94], extended Chaplygin gas [95][96][97][98][99]. It is interesting to note that it is possible to use the extended Chaplygin gas models equation of state [100][101][102][103], p = − B ρ α + A 1 ρ + A 2 ρ 2 + · · · .…”

Section: Resultsmentioning

confidence: 99%

Holographic dark energy from fluid/gravity duality constraint by cosmological observations

Pourhassan¹,

Bonilla²,

Faizal³

et al. 2018

Physics of the Dark Universe

View full text Add to dashboard Cite

In this paper, we obtain a holographic model of dark energy using the fluid/gravity duality. This model will be dual to a higher dimensional Schwarzschild black hole, and we would use fluid/gravity duality to relate to the parameters of this black hole to such a cosmological model. We will also analyze the thermodynamics of such a solution, and discuss the stability model. Finally, we use cosmological data to constraint the parametric space of this dark energy model. Thus, we will use observational data to perform cosmography for this holographic model based on fluid/gravity duality.

show abstract

Section: Resultsmentioning

confidence: 99%

Holographic dark energy from fluid/gravity duality constraint by cosmological observations

Pourhassan¹,

Bonilla²,

Faizal³

et al. 2018

Physics of the Dark Universe

View full text Add to dashboard Cite

show abstract

“…The next extensions are available as modified cosmic Chaplygin gas (Saadat and Pourhassan 2013c;Sadeghi et al 2014b) with the following equation of state,…”

Section: Introductionmentioning

confidence: 99%

Observational constraints on the extended Chaplygin gas inflation

Kahya

Pourhassan

2014

Astrophys Space Sci

Self Cite

View full text Add to dashboard Cite

In this paper, we study extended Chaplygin gas as a candidate for inflation and predict the values of gas parameters for a physically viable cosmological model. The extended Chaplygin gas which proposed recently has n + 2 free parameters. When n = 1, there are three parameters which are corresponding to modified Chaplygin gas. Here we focus on the second order equation of state where n = 2, so we have generally four free parameters. Under some assumptions, we reduced free parameters of the model to the only one parameter and try to fix it using the dimensionless age parameter. Also we check validity of our calculations using recent observations of BICEP2.

show abstract

“…Recently, the generalized cosmic Chaplygin gas (GCCG) model also introduced [9,10], 4) in such a way that the resulting models can be made stable and free from unphysical behaviors even when the vacuum fluid satisfies the phantom energy condition [11]. It is then straightforward to construct modified cosmic Chaplygin gas [12][13][14],…”

Section: +007mentioning

confidence: 99%

Interacting holographic extended Chaplygin gas and phantom cosmology in the light of BICEP2

2015

Self Cite

View full text Add to dashboard Cite

Abstract:In this paper, we study the holographic dark energy density and interacting extended Chaplygin gas energy density in the Einstein gravity. We reconstruct the scalar field and the scalar potential describing the extended Chaplygin gas. In the special case, we obtain energy density and investigate some cosmological parameters. Assuming interaction between components we find energy density for some different parametrization of total EoS. We analyze tensor to scalar ratio and use recent observational data of BICEP2 to fix the model parameters.

show abstract

Time-Dependent Density of Modified Cosmic Chaplygin Gas with Variable Cosmological Constant in Non-Flat Universe

Cited by 40 publications

References 39 publications

Holographic dark energy from fluid/gravity duality constraint by cosmological observations

Holographic dark energy from fluid/gravity duality constraint by cosmological observations

Observational constraints on the extended Chaplygin gas inflation

Interacting holographic extended Chaplygin gas and phantom cosmology in the light of BICEP2

Contact Info

Product

Resources

About