$f(Q,T)$ gravity models with observational constraints

Understand

The paper presents late time cosmology in $f(Q,T)$ gravity where the dark energy is purely geometric in nature.

• We start by employing a well motivated $f(Q,T)$ gravity model, $f(Q,T)=mQ^{n}+bT$ where $m,n$ and $b$ are model parameters.
• Additionally we also assume the universe to be dominated by pressure-less matter which yields a power law type scale factor of the form $% a(t)=c_{2}(At+c_{1})^{\frac{1}{A}}$, where $A=\dfrac{3(8\pi +b)}{n(16\pi +3b)% }$ and $c_{1}$ \& $c_{2}$ are just integration constants.
• To investigate the cosmological viability of the model, constraints on the model parameters were imposed from the updated 57 points of Hubble data sets and 580 points of union 2.1 compilation supernovae data sets.