5 papers
Automorphism Inducing Diffeomorphisms, Invariant Characterization of Homogeneous 3-Spaces and Hamiltonian Dynamics of Bianchi Cosmologies
T. Christodoulakis, E. Korfiatis, G. O. Papadopoulos
An invariant description of Bianchi Homogeneous (B.H.) 3-spaces is presented, by considering the action of the Automorphism Group on the configuration space of the real, symmetric,…
Conditional Symmetries and the Quantization of Bianchi Type I Vacuum Cosmologies with and without Cosmological Constant
T. Christodoulakis, T. Gakis, G. O. Papadopoulos
In this work, the quantization of the most general Bianchi Type I geometry, with and without a cosmological constant, is considered. In the spirit of identifying and subsequently r…
Conformal and Superconformal Mechanics
G. Papadopoulos
We investigate the conformal and superconformal properties of a non-relativistic spinning particle propagating in a curved background coupled to a magnetic field and with a scalar…
The Dynamics of D-3-brane Dyons and Toric Hyper-Kähler manifolds
G. Papadopoulos, J. Gutowski
We find the dyonic worldvolume solitons due to parallel (p,q) strings ending on a D-3-brane. These solutions preserve 1/4 of bulk supersymmetry. Then we investigate the scattering…
Grassmannians,Calibrations and Five-Brane Intersections
G. Papadopoulos, A. Teschendorff
We present a geometric construction of a new class of hyper-Kahler manifolds with torsion. This involves the superposition of the four-dimensional hyper-Kahler geometry with torsio…