95 citations · 646 across the 32 of their papers we have counts for
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FLRW metric cosmology with a perfect fluid by generating integrals of motion
N. Dimakis, T. Christodoulakis, Petros A. Terzis
In the context of metric f(R) gravity, we consider a FLRW space-time, filled with a perfect fluid described by a barotropic equation of state (p = γρ). We give the equivalent mini-…
Minisuperspace Canonical Quantization of the Reissner-Nordstrom Black Hole via Conditional Symmetries
T. Christodoulakis, N. Dimakis, Petros A. Terzis +3
We use the conditional symmetry approach to study the -evolution of a minisuperspace spherically symmetric model both at the classical and quantum level. After integration of th…
Lie - point and variational symmetries in minisuperspace Einstein's gravity
T. Christodoulakis, N. Dimakis, Petros A. Terzis
We consider the application of the theory of symmetries of coupled ordinary differential equations to the case of reparametrisation invariant Lagrangians quadratic in the velocitie…
Faithful representations of Lie algebras and Homogeneous Spaces
Petros A. Terzis
The faithful representations of real Lie algebras g with dimensions acting on the dual space of the universal covering algebra of an ideal s of g, are calculated. With th…