79 citations · 224 across the 10 of their papers we have counts for
10 papers
Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
A. Roussou, J. Smyrnakis, M. Magiropoulos +5
We study the rotational properties of a two-component Bose-Einstein condensed gas of distinguishable atoms which are confined in a ring potential using both the mean-field approxim…
Numerical solution of the stationary multicomponent nonlinear Schrödinger equation with a constraint on the angular momentum
P. Sandin, M. Ogren, M. Gulliksson
We formulate a damped oscillating particle method to solve the stationary nonlinear Schrödinger equation (NLSE). The ground state solutions are found by a converging damped oscilla…
Spherically symmetric Einstein-aether perfect fluid models
Alan A. Coley, Genly Leon, Patrik Sandin +1
We investigate spherically symmetric cosmological models in Einstein-aether theory with a tilted (non-comoving) perfect fluid source. We use a 1+3 frame formalism and adopt the com…
Stability of Einstein-Aether Cosmological Models
Patrik Sandin, Bassemah Alhulaimi, Alan Coley
We use a dynamical systems analysis to investigate the future behaviour of Einstein-Aether cosmological models with a scalar field coupling to the expansion of the aether and a non…
The initial singularity of ultrastiff perfect fluid spacetimes without symmetries
J. Mark Heinzle, Patrik Sandin
We consider the Einstein equations coupled to an ultrastiff perfect fluid and prove the existence of a family of solutions with an initial singularity whose structure is that of ex…
Future asymptotics of tilted Bianchi type II cosmologies
Sigbjorn Hervik, Woei Chet Lim, Patrik Sandin +1
In this paper we study the future asymptotics of spatially homogeneous Bianchi type II cosmologies with a tilted perfect fluid with a linear equation of state. By means of Hamilton…