Global behavior of cosmological dynamics with interacting Veneziano ghost

Abstract

In this paper, we shall study the dynamical behavior of the universe accelerated by the so called Veneziano ghost dark energy component locally and globally by using the linearization and nullcline method developed in this paper. The energy density is generalized to be proportional to the Hawking temperature defined on the trapping horizon instead of Hubble horizon of the Friedmann-Robertson-Walker (FRW) universe. We also give a prediction of the fate of the universe and present the bifurcation phenomenon of the dynamical system of the universe. It seems that the universe could be dominated by dark energy at present in some region of the parameter space.

8 pages, 7 figures, accepted for publication in JHEP

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• Inflaton as an auxiliary topological field in a QCD-like system
• QCD ghost dark energy cannot (even roughly) explain the main features of the accepted cosmological paradigm
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• Interaction between modified Chaplygin gas and ghost dark energy in presence of extra dimensions
• Interacting Dark Energy: Dynamical System Analysis
• Consistency of nonlinear interacting ghost dark energy with recent observations
• Bifurcation and Global Dynamical Behavior of the $f(T)$ Theory
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• Cosmological dynamics and bifurcation analysis of the general non-minimally coupled scalar field models
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• Multi-pole Dark Energy