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In this paper, we use a Tsallis holographic dark energy model in two forms, interacting and non-interacting cases, to acquire some parameters as the equation of state for the energy density of the Tsallis model in the FRW universe…

General Relativity and Quantum Cosmology · Physics 2023-03-14 J. Sadeghi , S. Noori Gashti , T. Azizi

A new dark energy model called "ghost dark energy" was recently suggested to explain the observed accelerating expansion of the universe. This model originates from the Veneziano ghost of QCD. The dark energy density is proportional to…

High Energy Physics - Theory · Physics 2015-03-19 A. Sheykhi , M. Sadegh Movahed

A model consisting of quintessence scalar field interacting with cold dark matter is considered. Conditions required to reach $w_d=-1$ are discussed. It is shown that depending on the potential considered for the quintessence, reaching the…

General Relativity and Quantum Cosmology · Physics 2010-06-17 H. Mohseni Sadjadi

We derive two field theory models of interacting dark energy, one in which dark energy is associated with the quintessence and another in which it is associated with the tachyon. In both, instead of choosing arbitrarily the potential of…

General Relativity and Quantum Cosmology · Physics 2020-07-10 Sandro M. R. Micheletti

In this paper, we study the interacting DGP braneworld Holographic Dark Energy model in a spatially flat FRW universe. Mainly, in this study we concentrate our attention on both interacting and non-interacting form of the model. The study…

General Relativity and Quantum Cosmology · Physics 2019-10-23 Ehsan Sadri , Martiros Khurshudyan

This study examines interacting quintessence dark energy models and their observational constraints for a general parameterization of the quintessence potential, which encompasses a broad range of popular potentials. Four different forms of…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-25 Nandan Roy

In the context of the induced matter theory of gravity, we investigate the possibility of deriving a 4D quintessential scenario where an interaction between dark energy and dark matter is allowed, and the dark energy component is modeled by…

General Relativity and Quantum Cosmology · Physics 2009-08-11 L. M. Reyes , Jose Edgar Madriz Aguilar

We investigate interacting ghost dark energy models in higher dimensional cosmology. We attempt to model dark matter within a barotropic fluid with $P_{b}=\omega(t)_{b}\rho$. In this work we consider four different models based on choosing…

General Relativity and Quantum Cosmology · Physics 2016-05-25 J. Sadeghi , M. Khurshudyan , H. Farahani

In this paper we investigate ghost dark energy model in the presence of non-linear interaction between dark energy and dark matter. We also extend the analysis to the so called generalized ghost dark energy (GGDE) which $\rho_D=\alpha…

Cosmology and Nongalactic Astrophysics · Physics 2017-07-05 E. Ebrahimi , H. Golchin , A. Mehrabi , S. M. S. Movahed

We consider a model where both dark energy and dark matter originate from the coupling of a scalar field with a non-conventional kinetic term to, both, a metric measure and a non-metric measure. An interacting dark energy/dark matter…

General Relativity and Quantum Cosmology · Physics 2015-06-11 Stefano Ansoldi , Eduardo I. Guendelman

In this paper we consider two models of quintessence scalar fields with different potentials. Interaction with generalized cosmic Chaplygin gas is also investigated. Cosmological parameters are studied and graphical behavior is analyzed. We…

General Relativity and Quantum Cosmology · Physics 2014-07-08 M. Khurshudyan , E. Chubaryan , B. Pourhassan

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)…

General Relativity and Quantum Cosmology · Physics 2015-06-11 Esmaeil Ebrahimi , Ahmad Sheykhi , Hamzeh Alavirad

We investigate the QCD ghost model of dark energy in the framework of Brans-Dicke cosmology. First, we study the non-interacting ghost dark energy in a flat Brans-Dicke theory. In this case we obtain the EoS and the deceleration parameters…

High Energy Physics - Theory · Physics 2015-05-28 Esmaeil Ebrahimi , Ahmad Sheykhi

We investigate interacting dark energy models in the framework of fractal cosmology. We discuss a fractal FRW universe filled with the dark energy and dark matter which interact with each other. We obtain the equation for the relative…

Cosmology and Nongalactic Astrophysics · Physics 2012-05-29 O. A. Lemets , D. A. Yerokhin

We analyze the coupled quintessence in the light of the linear dynamical systems theory, with two different interactions: i) proportional to the energy density of the dark energy and ii) proportional to the sum of the energy densities of…

General Relativity and Quantum Cosmology · Physics 2017-05-09 Fabrizio F. Bernardi , Ricardo G. Landim

The paper deals with a theoretical model for interacting dark energy. The interaction between the cold dark matter (dust) and the dark energy has been assumed to be non-gravitational in nature. Exact analytic cosmological solutions are…

General Relativity and Quantum Cosmology · Physics 2015-07-31 Supriya Pan , Subhra Bhattacharya , Subenoy Chakraborty

In this manuscript, we use the correspondence principle to construct the generalized ghost dark energy $f(Q)$ model, where $Q$ is the non-metricity. For this purpose, we use the Friedman-Robertson-Walker universe model with power-law scale…

General Relativity and Quantum Cosmology · Physics 2024-03-05 M. Sharif , Madiha Ajmal

Non-gravitational interaction between two barotropic dark fluids, namely the pressureless dust and the dark energy in a spatially flat Friedmann-Lema\^{i}tre-Robertson-Walker model has been discussed. It is shown that for the interactions…

Cosmology and Nongalactic Astrophysics · Physics 2018-04-30 Supriya Pan , Ankan Mukherjee , Narayan Banerjee

It is generally assumed that the two dark components of the energy density of the universe, a smooth component called dark energy and a fluid of nonrelativistic weakly interacting particles called dark matter, are independent of each other…

Astrophysics · Physics 2007-05-23 Mark B. Hoffman

In the proposed model with interaction between dark energy and dark matter, we consider cosmological scenarios with different equations of state ($w_d$) for dark energy. For both constant and variable equation of state, we analyze solutions…

General Relativity and Quantum Cosmology · Physics 2017-10-18 Supriya Pan , German S. Sharov
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