Crossing of phantom divide line in model \\of interacting Tsallis holographic dark energy

TL;DR

This paper investigates a Tsallis holographic dark energy model with interaction, analyzing its potential to cross the phantom divide line multiple times depending on parameter choices.

Contribution

It introduces a novel interacting Tsallis holographic dark energy model and explores its ability to cross the phantom divide line multiple times.

Findings

Phantom line crossing can occur twice for certain parameters.

The model's dynamics depend on the constants C and γ.

The event horizon is used as the characteristic scale.

Abstract

We consider a Tsallis holographic dark energy model with interaction between dark energy and matter. The density of dark energy is taken as $\rho_d \sim 3C^2/L^{4-2\gamma}$, where $C$, $\gamma$ are constants. The event horizon is chosen as the characteristic scale $L$. The cosmological dynamics of the universe are analyzed, with special attention paid to the possibility of crossing the phantom line $w_{eff}=-1$. It is shown that for certain values of parameters this may occur not only once, but also twice.