421 citations · 5.4k across the 117 of their papers we have counts for
14 papers · 1 filter
Scalar field as a Bose-Einstein condensate in a Schwarzschild-de Sitter spacetime
Elías Castellanos, Celia Escamilla-Rivera, Claus Lämmerzahl +1
In this paper we analyze some properties of a scalar field configuration, where it is considered as a trapped Bose-Einstein condensate in a Schwarzschild-de Sitter background space…
On geodesic deviation in Schwarzschild spacetime
Dennis Philipp, Volker Perlick, Claus Laemmerzahl +1
For metrology, geodesy and gravimetry in space, satellite based instruments and measurement techniques are used and the orbits of the satellites as well as possible deviations betw…
Stability of self-gravitating Bose-Einstein-Condensates
Kris Schroven, Meike List, Claus Lämmerzahl
We study the ground state and the first three radially excited states of a self-gravitating Bose-Einstein- Condensate with respect to the influence of two external parameters, the…
Analytical solutions for geodesics in black hole spacetimes
Eva Hackmann, Claus Lämmerzahl
We review the analytical solution methods for the geodesic equations in Kerr-Newman-Taub-NUT-de Sitter spacetimes and its subclasses in terms of elliptic and hyperelliptic function…
Analytical solution methods for geodesic motion
Eva Hackmann, Claus Lämmerzahl
The observation of the motion of particles and light near a gravitating object is until now the only way to explore and to measure the gravitational field. In the case of exact bla…
ATUS-PRO: A FEM-based solver for the time-dependent and stationary Gross-Pitaevskii equation
Želimir Marojević, Ertan Göklü, Claus Lämmerzahl
ATUS-PRO is a solver-package written in C++ designed for the calculation of numerical solutions of the stationary- and the time dependent Gross--Pitaevskii equation for local two-p…