A Universe with a generalized ghost dark energy and Van der Waals fluid interacting with a fluid

Abstract

In this paper, we consider an unusual connection between different fluids. Having established a research goal we would like to consider a toy model of the Universe and investigate its behavior, especially for later time evolution for well known facts. The main goal of the article is to consider a toy model of the Universe with generalized ghost dark energy, Van der Waals gas and a phenomenologically modified fluid. The origin of the last component can be understood as a result of interaction between some original fluid and some source of energy or matter in Universe. By unusual connection we mean an assumption that generalized ghost dark energy has its contribution to the model by an interaction term $Q$ and we suppose an interaction of the form $Q=3Hb({\rho }_{tot}-{\rho }_{GDe})$. Graphical analysis is performed and the questions of validity of the generalized second law of thermodynamics and stability of the model also approached in this paper.

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• I. Linear Interacting Dark Energy: Analytical Solutions and Theoretical Pathologies
• Revisiting Holographic Dark Energy in Cyclic Cosmology