42 citations · 140 across the 16 of their papers we have counts for
16 papers
Classical and quantum analysis of 3D electromagnetic pp-wave spacetime
T. Pailas, N. Dimakis, A. Karagiorgos +3
The general classical solution of the 3D electromagnetic pp-wave spacetime has been obtained. The relevant line element contains an arbitrary essential function providing an infini…
Quantum cosmology of Bianchi VIII, IX LRS geometries
A. Karagiorgos, T. Pailas, N. Dimakis +3
In the present work we revisit the axisymmetric Bianchi VIII and IX models. At the classical level we reproduce the known analytic solution, in a novel way making use of two quadra…
Finding integrals and identities in the Newman Penrose formalism: a comment on Class. Quantum Grav. 26 (2009) 105022 and on Gen. Relativ. Gravit. (2014)46:1703
Georgios O. Papadopoulos
In 1969 Kinnersley, using the NP formalism, found all the Petrov type D, Ricci flat, solutions to the Einstein's Field Equations. Yet, in doing so -as it seems- he neglected two fu…
Locally Homogeneous Spaces, Induced Killing Vector Fields and Applications to Bianchi Prototypes
G. O. Papadopoulos, Th. Grammenos
An answer to the question: Can, in general, the adoption of a given symmetry induce a further symmetry, which might be hidden at a first level? has been attempted in the context of…
Towards Canonical Quantum Gravity for Geometries Admitting Maximally Symmetric Two-dimensional Surfaces
T. Christodoulakis, G. Doulis, Petros A. Terzis +4
The 3+1 (canonical) decomposition of all geometries admitting two-dimensional space-like surfaces is exhibited. A proposal consisting of a specific re-normalization {\bf Assumption…
Towards Canonical Quantum Gravity for G1 Geometries in 2+1 Dimensions with a Lambda--Term
T. Christodoulakis, G. Doulis, Petros A Terzis +4
The canonical analysis and subsequent quantization of the (2+1)-dimensional action of pure gravity plus a cosmological constant term is considered, under the assumption of the exis…