Interacting entropy-corrected new agegraphic dark energy in Brans–Dicke cosmology

Karami, K.; Sheykhi, Ahmad; Jamil, Mubasher; Azarmi, Z.; Soltanzadeh, M. M.

doi:10.1007/s10714-010-1072-7

Cited by 50 publications

(24 citation statements)

References 108 publications

(137 reference statements)

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“…[14][15][16][17][18][19] and references therein). However, it would be nice to resolve the DE puzzle without presenting any new degree of freedom or any new parameter in the theory.…”

Section: Introductionmentioning

confidence: 99%

Interacting generalized ghost dark energy in a non-flat universe

Ebrahimi¹,

Sheykhi²,

Alavirad

2013

Open Physics

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Abstract:We investigate the generalized Quantum Chromodynamics (QCD) ghost model of dark energy in the framework of Einstein gravity. First, we study the non-interacting generalized ghost dark energy in a flat Friedmann-Robertson-Walker (FRW) background. We obtain the equation of state parameter, D = /ρ, the deceleration parameter, and the evolution equation of the generalized ghost dark energy. We find that, in this case, D cannot cross the phantom line ( D > −1) and eventually the universe approaches a deSitter phase of expansion ( D → −1). Then, we extend the study to the interacting ghost dark energy in both a flat and non-flat FRW universe. We find that the equation of state parameter of the interacting generalized ghost dark energy can cross the phantom line ( D < −1) provided the parameters of the model are chosen suitably. Finally, we constrain the model parameters by using the Markov Chain Monte Carlo (MCMC) method and a combined dataset of SNIa, CMB, BAO and X-ray gas mass fraction.

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“…[14][15][16][17][18][19] and references therein). However, it would be nice to resolve the DE puzzle without presenting any new degree of freedom or any new parameter in the theory.…”

Section: Introductionmentioning

confidence: 99%

Interacting generalized ghost dark energy in a non-flat universe

Ebrahimi¹,

Sheykhi²,

Alavirad

2013

Open Physics

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“…Substituting Eq. (34) into (13) and using (33) we obtain the EoS parameter of ECHDE f (T ) gravity model in logarithmic version as w = p ρ graphically. In Fig.…”

Section: Echde In Logarithmic Correctionmentioning

confidence: 99%

“…Subsequently, Wei and Cai [30] suggested a new kind of ADE model by removing the age of the universe and replacing it with the conformal time (η), called the new agegraphic DE (NADE) model. Recently, Wei [24] initiated the energy density of the entropy-corrected NADE (ECNADE) in power-law and logarithmic corrections like the entropycorrected HDE (ECHDE) in a power-law and a logarithmic correction model and details of these were discussed in [31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Reconstructions of f(T) gravity from entropy-corrected holographic and new agegraphic dark energy models in power-law and logarithmic versions

Saha

Debnath

2016

Eur. Phys. J. C

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Here, we peruse cosmological usage of the most promising candidates of dark energy in the framework of f (T ) gravity theory where T represents the torsion scalar teleparallel gravity. We reconstruct the different f (T ) modified gravity models in the spatially flat FriedmannRobertson-Walker universe according to entropy-corrected versions of the holographic and new agegraphic dark energy models in power-law and logarithmic corrections, which describe an accelerated expansion history of the universe. We conclude that the equation of state parameter of the entropy-corrected models can transit from the quintessence state to the phantom regime as indicated by recent observations or can lie entirely in the phantom region. Also, using these models, we investigate the different areas of the stability with the help of the squared speed of sound.

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“…These quantum corrections provided to the entropyarea relationship leads to the curvature correction in the Einstein-Hilbert action and vice versa [57][58][59]. The corrected entropy takes the form [60][61][62][63][64][65] …”

Section: Introductionmentioning

confidence: 99%

Holographic dark energy in Brans–Dicke theory with logarithmic correction

et al. 2011

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In the derivation of holographic dark energy density, the area law of the black hole entropy plays a crucial role. However, the entropy-area relation can be modified from the inclusion of quantum effects, motivated from the loop quantum gravity, string theory and black hole physics. In this paper, we study cosmological implication of the interacting entropy-corrected holographic dark energy model in the framework of Brans-Dicke cosmology. We obtain the equation of state and the deceleration parameters of the entropy-corrected holographic dark energy in a non-flat Universe. As system's IR cutoff we choose the radius of the event horizon measured on the sphere of the horizon, defined as L = ar(t). We find out that when the entropy-corrected holographic dark energy is combined with the Brans-Dicke field, the transition from normal state where w D > −1 to the phantom regime where w D < −1 for the equation of state of interacting dark energy can be more easily achieved for than when resort to the Einstein field equations is made.

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Interacting entropy-corrected new agegraphic dark energy in Brans–Dicke cosmology

Cited by 50 publications

References 108 publications

Interacting generalized ghost dark energy in a non-flat universe

Interacting generalized ghost dark energy in a non-flat universe

Reconstructions of f(T) gravity from entropy-corrected holographic and new agegraphic dark energy models in power-law and logarithmic versions

Holographic dark energy in Brans–Dicke theory with logarithmic correction

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