New holographic reconstruction of scalar-field dark-energy models in the framework of chameleon Brans–Dicke cosmology

Abstract

Motivated by the work of Yang et al. (Mod. Phys. Lett. A 26:191, 2011), we report on a study of the new holographic dark energy (NHDE) model with energy density given by ρ D = 3φ 2 4ω (μH 2 + νḢ ) in the framework of chameleon Brans-Dicke cosmology. We have studied the correspondence between the quintessence, the DBI-essence, and the tachyon scalar-field models with the NHDE model in the framework of chameleon Brans-Dicke cosmology. Deriving an expression of the Hubble parameter H and, accordingly, ρ D in the context of chameleon Brans-Dicke chameleon cosmology, we have reconstructed the potentials and dynamics for these scalar-field models. Furthermore, we have examined the stability for the obtained solutions of the crossing of the phantom divide under a quantum correction of massless conformally invariant fields, and we have seen that the quantum correction could be small when the phantom crossing occurs and the obtained solutions of the phantom crossing could be stable under the quantum correction. It has also been noted that the potential increases as the matterchameleon coupling gets stronger with the evolution of the universe.

Holographic Polytropicf(T)Gravity Models

“…In the present work, we have new holographic reconstructed polytropic dark energy and these kinds of holographic reconstruction of other dark energy models are already reported in [48][49][50]55]. Viewing ( ) as an effective description of the underlying theory of DE and considering the new holographic polytropic dark energy as point in the direction of the underlying theory of DE, we have studied how the modified gravity can describe the new holographic polytropic dark energy as effective theory of DE.…”

Holographic reconstruction of scalar field models of dark energy in the background of Brans Dicke cosmology

“…On consideration of correspondence between this potential and potential of scalar field dark energy models, it is possible to attain the phantom phase of the universe in late time. This approach is motivated by [22].…”

Interacting Logarithmic Entropy-Corrected Agegraphic Chameleon-Tachyon Dark Energy

“…Also, much attempts have been done to reconstruct scalar field DE models, from HDE and ADE [42][43][44][45][46]. In some of them the coupling between the scalar field and DM Lagrangian, called chameleon, has been considered [47][48][49]. Tachyon scalar field motivated from string theory is a especial scalar field which can explain the whole history of the Universe from inflation to late time acceleration [50][51][52][53][54][55][56][57][58][59].…”