Scrutinizing Various Phenomenological Interactions In The Context Of Holographic Ricci Dark Energy Models

Sadri, Ehsan; Khurshudyan, Martiros; Zeng, Ding-fang

doi:10.48550/arxiv.1904.11600

Cited by 5 publications

(5 citation statements)

References 61 publications

(87 reference statements)

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“…In our recent work, we compared different phenomenological linear and non-linear interaction cases in the framework of the holographic Ricci dark energy model [46] and we found that the linear interaction Q = 3Hbρ D and Q = 3Hbρ m are the best cases among the others. Accordingly, in this work we take Q = 3Hbρ m in our calculations.…”

Section: The Hubble Horizonmentioning

confidence: 99%

Observational constraints on interacting Tsallis holographic dark energy model

Sadri

2019

Eur. Phys. J. C

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In this paper, we investigate a recent proposed model -so called the Tsallis holographic dark energy (THDE) model with consideration of the Hubble and the event future horizon as IR cutoffs. In this case, we consider the non-gravitational and phenomenological interaction between dark sectors. We fit the free parameters of the model using Pantheon Supernovae Type Ia data, Baryon Acoustic Oscillations, Cosmic Microwave Background, Gamma-Ray burst and the the local value of the Hubble constant. We examine the THDE model to check its compatibility with observational data using objective Information Criterion (IC). We find that the THDE models cannot be supported by observational data once the CDM is considered as the referring model. Therefore we re-examine the analysis with the standard holographic dark energy model (HDE) as another reference. Changing the CDM to main standard dark energy model (HDE), we observe the compatibility of the THDE models. Using the Alcock-Paczynski (AP) test we check the deviation of the model compared to CDM and HDE. Surveying the evolution of squared of sound speed v 2 s as an another test we check the stability of the interacting and non-interacting THDE models and we find that while the THDE model with the Hubble horizon as IR cutoff is unstable against the background perturbation, the future event horizon as IR cutoff show stability at the late time. In addition, using the modified version of the CAMB package, we observe the suppressing the CMB spectrum at small K-modes and large scale.Eur. Phys. J. C

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Section: The Hubble Horizonmentioning

confidence: 99%

Observational constraints on interacting Tsallis holographic dark energy model

Sadri

2019

Eur. Phys. J. C

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“…In fact, there are different choices for Q term in order to study the dynamics of interacting DE models. In the recent work, the different phenomenological linear and non-linear interaction cases in the framework of the holographic Ricci dark energy model have been investigated and the results show that the linear interaction Q = 3Hbρ D is the best case among the others [65]. Accordingly, in the herein model, we take Q = 3Hb 2 ρ D as the interaction term, in which b 2 is a coupling constant.…”

Section: Fractal Cosmologymentioning

confidence: 99%

Tsallis holographic dark energy in fractal universe

2020

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We study the cosmological consequences of interacting Tsallis holographic dark energy model in the framework of the fractal universe, in which, the Hubble radius is considered as the IR cut-off. We drive the equation of state (EoS) parameter, deceleration parameter and the evolution equation for the Tsallis holographic dark energy density parameter. Our study shows that this model can describe the current accelerating Universe in both noninteracting and interacting scenarios, and also a transition occurs from the deceleration phase to the accelerated phase, at the late time. Finally, we check the compatibility of free parameters of the model with the latest observational results by using the Pantheon supernovae data, eBOSS, 6df, BOSS DR12, CMB Planck 2015, Gamma-Ray Burst.

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“…Here γ and c dimensionless constants and deceleration parameter is defined in equation (5). Recently, Sadri et al [114] have compared different phenomenological linear as well as non-linear interaction cases in the framework of the holographic Ricci DE model and they found that the linear interaction are the best cases among the others. Inspired by the works of Pavon and Zimdahl [115], Sadeghi et al [116], Honarvaryan et al [117], Zadeh et al [82] and Sadri [84], in this work, we consider the linear interacting term as Q = 3c 2 H(ρ m + ρ de ).…”

Section: Interacting Modelmentioning

confidence: 99%

Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory

Aditya¹,

Mandal²,

Sahoo³

et al. 2019

Eur. Phys. J. C

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In this paper, we investigate the dark energy phenomenon by studying the Tsallis holographic dark energy within the framework of Brans-Dicke (BD) scalar-tensor theory of gravity [Phys. Rev. 124, 925 (1961)]. In this context, we choose the BD scalar field φ as a logarithmic function of the average scale factor a(t) and Hubble horizon as the IR cutoff (L = H −1 ). We reconstruct two cases of non-interacting and interacting fluid (dark sectors of cosmos) scenario. The physical behavior of the models are discussed with the help of graphical representation to explore the accelerated expansion of the universe. Moreover, the stability of the models are checked through squared sound speed v 2 s . The well-known cosmological plane i.e., ω de − ω de is constructed for our models. We also include comparison of our findings of these dynamical parameters with observational constraints. It is also quite interesting to mention here that the results of deceleration, equation of state parameters and ω de − ω de plane coincide with the modern observational data.Keywords Tsallis holographic dark energy · Brans-Dicke gravity · cosmological parameters · dark energy · logorithemic scalar field PACS 04.50.kd.

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Scrutinizing Various Phenomenological Interactions In The Context Of Holographic Ricci Dark Energy Models

Cited by 5 publications

References 61 publications

Observational constraints on interacting Tsallis holographic dark energy model

Observational constraints on interacting Tsallis holographic dark energy model

Tsallis holographic dark energy in fractal universe

Observational constraint on interacting Tsallis holographic dark energy in logarithmic Brans–Dicke theory

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