English

Interacting Ghost Dark Energy Models with Variable $G$ and $\Lambda$

General Relativity and Quantum Cosmology 2013-12-17 v1 High Energy Physics - Phenomenology High Energy Physics - Theory

Abstract

In this paper we consider several phenomenological models of variable Λ\Lambda. Model of a flat Universe with variable Λ\Lambda and GG is accepted. It is well known, that varying GG and Λ\Lambda gives rise to modified field equations and modified conservation laws, which gives rise to many different manipulations and assumptions in literature. We will consider two component fluid, which parameters will enter to Λ\Lambda. Interaction between fluids with energy densities ρ1\rho_{1} and ρ2\rho_{2} assumed as Q=3Hb(ρ1+ρ2)Q=3Hb(\rho_{1}+\rho_{2}). We have numerical analyze of important cosmological parameters like EoS parameter of the composed fluid and deceleration parameter qq of the model.

Keywords

Cite

@article{arxiv.1308.3450,
  title  = {Interacting Ghost Dark Energy Models with Variable $G$ and $\Lambda$},
  author = {J. Sadeghi and M. Khurshudyan and A. Movsisyan and H. Farahani},
  journal= {arXiv preprint arXiv:1308.3450},
  year   = {2013}
}

Comments

20 pages, 21 figures. arXiv admin note: substantial text overlap with arXiv:1308.1819

R2 v1 2026-06-22T01:09:59.266Z