The impact of f(Q,T) gravity on Barrow holographic dark energy: A cosmological analysis
Myrzakulov N. Shekh S.H. Pradhan A. Ghaderi K.
30 September 2025World Scientific
International Journal of Geometric Methods in Modern Physics
2025#22Issue 11
In this paper, we explore a new version of dark energy called Barrow holographic dark energy within the framework modified gravity called f(Q,T) gravity by adopting the simple homogeneous, isotropic, and spatially flat Friedmann–Robertson–Walker (FRW) model of the universe. Our goal is to understand how the universe evolved over time. To do this, we use parameterizetion of Hubble’s parameter method. We then use a powerful tool called Monte-Carlo Markov Chain to find the best values for the constants in our formula. We do this by comparing our formula to actual data from observations of the universe. Once we have the best values for the constants, we calculate other important parameters that describe the universe’s evolution. These include: Deceleration parameter which measures how quickly the expansion is slowing down. We found q0 = −0.601−0.0131+0.0131. Equation of state parameter measures the properties of dark energy. We find ω0 = −0.7018−0.0101+0.0101. We also study the stability and energy conditions along with the state-finder and Om(z)-parameter of our model to ensure it is consistent with our understanding of the universe.
BHDE , cosmology , f(Q,T) gravity , specific H(z)
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L N Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Department of Mathematics, S.P.M. Science and Gilani Arts, Commerce College, Ghatanji, Yavatmal, 445301, India
Centre for Cosmology, Astrophysics and Space Science (CCASS), GLA University, Mathura, 281406, India
Department of Physics, Marivan Branch, Islamic Azad University, Marivan, Iran
L N Gumilyov Eurasian National University
Department of Mathematics
Centre for Cosmology
Department of Physics
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