166 citations · 310 across the 6 of their papers we have counts for
6 papers
Origin of chaos near critical points of quantum flow
C. Efthymiopoulos, C. Kalapotharakos, G. Contopoulos
The general theory of motion in the vicinity of a moving quantum nodal point (vortex) is studied in the framework of the de Broglie - Bohm trajectory method of quantum mechanics. U…
Invariant manifolds and the response of spiral arms in barred galaxies
P. Tsoutsis, C. Kalapotharakos, C. Efthymiopoulos +1
The unstable invariant manifolds of the short-period family of periodic orbits around the unstable Lagrangian points and of a barred galaxy define loci in the configura…
Three-dimensional numerical simulations of the pulsar magentoshere: Preliminary results
Constantinos Kalapotharakos, Ioannis Contopoulos
We investigate the three-dimensional structure of the pulsar magnetosphere through time-dependent numerical simulations of a magnetic dipole that is set in rotation. We developed o…
The rate of secular evolution in elliptical galaxies with central masses
Constantinos Kalapotharakos
We study a series of body simulations representing elliptical galaxies with central masses. Starting from two different systems with smooth centres, which have initially a tria…
Nodal points and the transition from ordered to chaotic Bohmian trajectories
Christos Efthymiopoulos, Constantinos Kalapotharakos, George Contopoulos
We explore the transition from order to chaos for the Bohmian trajectories of a simple quantum system corresponding to the superposition of three stationary states in a 2D harmonic…
Appropriate SCF basis sets for orbital studies of galaxies and a `quantum-mechanical' method to compute them
Constantinos Kalapotharakos, Christos Efthymiopoulos, Nikos Voglis
We address the question of an appropriate choice of basis functions for the self-consistent field (SCF) method of simulation of the N-body problem. Our criterion is based on a comp…