$2+1$ Covariant Lattice Theory and t'Hooft's Formulation

$<T^μ_ν>_{ren}$ of the quantized fields in the Unruh state in the Schwarzschild spacetime

$<φ^2>$ in the Spacetime of a Cylindrical Black Hole

$AdS_{2} \times S^{2}$ geometries and the extreme quantum-corrected black holes

$D$-Dimensional Gravity from $(D+1)$ Dimensions

$f(R)$ Gravity and Crossing the Phantom Divide Barrier

$f(R)$-Cosmolgy from Early Universe Upto Future Cosmic Collapse and its Avoidance

$f(T)$ models with phantom divide line crossing

$N+1$ formalism in Einstein-Gauss-Bonnet gravity

$R + R^2$ Gravity as $R +$ Backreaction

$R^2$ corrections to the cosmological dynamics of inflation in the Palatini formulation

$w$-cosmological singularities

$w$-singularities in cosmological models

$w_d=-1$ in interacting quintessence model

$\bar{SL}(4,R)$ Embedding for a 3D World Spinor Equation

$\hat{Q}$ operator for canonical quantum gravity

$\hbar$ as parameter of Minkowski metric in effective theory

$\La \to 0$ limit of 2+1 Quantum Gravity for arbitrary genus

$\mathcal{N}=1$ SUGRA Noether Charges

$\rm Ψ= W e^{\pm Φ}$ quantum cosmological solutions for Class A Bianchi Models