Barrow Holographic Dark Energy with Hybrid Expansion Law

Gravitation and Cosmology(2022)

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摘要
We investigate the Barrow holographic dark energy (BHDE) model using IR cutoff as the Hubble horizon in the background of a flat Friedmann–Lemaître–Robertson–Walker universe. The deceleration parameter exhibits the universe evolution from decelerated to accelerated phase. The EoS parameter of the BHDE model presents a nice behavior as it lies in the phantom era ( ω_B<-1 ) and the quintessence era ( ω_B≥-1 ) for different values of the Barrow parameter Δ . The squared sound velocity v_s^2 has been investigated for the stability of the model. In addition, a correspondence with the phantom and quintessence scalar fields has been studied for the model, which helps us to describe the accelerated expansion of the universe.
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关键词
expansion,energy,dark
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