Cosmology of Barrow holographic QCD ghost dark energy and a look into the thermodynamics
Altaibayeva A. Chattopadhyay S. Umurzakhova Z.
1 June 2024Institute of Physics
Physica Scripta
2024#99Issue 6
The present study endeavours to study the cosmology of QCD ghost dark energy based on Barrow holographic fluid, a particular example of Nojiri-Odintsov holographic dark energy (2006, General Relativity and Gravitation, 38, 1285-1304); (2017, The European Physical Journal C, 77, 1-8). The Hubble parameter is reconstructed and according the equation of state parameter is reconstructed for the Barrow holographic QCD ghost dark energy. It is observed that the effective equation of state parameter has a transition from quintessence to phantom and for the current universe the equation of state parameter is very close to −1. The deceleration parameter is computed based on the reconstructed Hubble parameter and it is observed that the model can have a transition from decelerated to accelerated universe. The statefinder trajectories are plotted and an interpolation between dust and ΛCDM phases is observed. Finally, the thermodynamics is studied considering apparent horizon as the enveloping horizon of the Universe.
Barrow holographic fluid , Hubble parameter , QCD ghost dark energy , thermodynamics
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Department of General and Theoretical Physics, L.N. Gumilyov Eurasian National University, Kazakhstan
Department of Mathematics, Amity University Kolkata, Major Arterial Road, Action Area II, Kolkata, 700135, India
Department of General and Theoretical Physics, L.N. Gumilyov Eurasian National University, Kazakhstan
Mukhtar Auezov South Kazakhstan University, Tauke Khan av., Shymkent, Kazakhstan
Department of General and Theoretical Physics
Department of Mathematics
Department of General and Theoretical Physics
Mukhtar Auezov South Kazakhstan University
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