124 citations · 648 across the 13 of their papers we have counts for
13 papers
Rotating Bose-Einstein condensates: Closing the gap between exact and mean-field solutions
J. C. Cremon, A. D. Jackson, E. \" O. Karabulut +3
When a Bose-Einstein condensed cloud of atoms is given some angular momentum, it forms vortices arranged in structures with a discrete rotational symmetry. For these vortex states,…
Shape Deformations in Atomic Nuclei
Ikuko Hamamoto, Ben R. Mottelson
The ground states of some nuclei are described by densities and mean fields that are spherical, while others are deformed. The existence of non-spherical shape in nuclei represents…
A further look at prolate dominance in nuclear deformation
Ikuko Hamamoto, Ben R. Mottelson
The observed almost complete dominance of prolate over oblate deformations in the ground states of deformed even-even nuclei is related to the splitting of high "surface" or…
Shell structure and pairing for interacting fermions in a trap
Henning Heiselberg, Ben Mottelson
The shell structures for weakly interacting fermions in harmonic oscillator traps at zero temperature undergo several transitions depending on the number of particles in the trap a…
Comment on ``Fragmented Condensate Ground State of Trapped Weakly Interacting Bosons in Two Dimensions"
G. M. Kavoulakis, S. M. Reimann, B. Mottelson
Recently Liu et al. [PRL 87, 030404 (2001)] examined the lowest state of a weakly-interacting Bose-Einstein condensate. In addition to other interesting results, using the method o…
Low energy Collective Modes of a Superfluid Trapped atomic Fermi Gas
G. M. Bruun, B. R. Mottelson
We consider the low energy collective mode spectrum of a superfluid Fermi gas in a spherical trap in the collisionless regime. Using a self-consistent random-phase approximation, t…
Low-lying excitations of a trapped rotating Bose-Einstein condensate
G. M. Kavoulakis, B. Mottelson, S. M. Reimann
We investigate the low-lying excitations of a weakly-interacting, harmonically-trapped Bose-Einstein condensed gas under rotation, in the limit where the angular mometum of the…
Weakly Interacting Bose-Einstein Condensates Under Rotation: Mean-field versus Exact Solutions
A. D. Jackson, G. M. Kavoulakis, B. Mottelson +1
We consider a weakly-interacting, harmonically-trapped Bose-Einstein condensed gas under rotation and investigate the connection between the energies obtained from mean-field calcu…
Weakly-interacting Bose-Einstein condensates under rotation
G. M. Kavoulakis, B. Mottelson, C. J. Pethick
We investigate the ground and low excited states of a rotating, weakly interacting Bose-Einstein condensed gas in a harmonic trap for a given angular momentum. Analytical results i…
Rotational and vibrational spectra of quantum rings
M. Koskinen, M. Manninen, B. Mottelson +1
One can confine the two-dimensional electron gas in semiconductor heterostructures electrostatically or by etching techniques such that a small electron island is formed. These man…
Broken Symmetries in the Reconstruction of v=1 Quantum Hall Edges
S. M. Reimann, M. Koskinen, S. Viefers +2
Spin-polarized reconstruction of the v=1 quantum Hall edge is accompanied by a spatial modulation of the charge density along the edge. We find that this is also the case for finit…
The Yrast Spectra of Weakly Interacting Bose-Einstein Condensates
B. Mottelson
The low energy quantal spectrum is considered as a function of the total angular momentum for a system of weakly interacting bosonic atoms held together by an external isotropic ha…
Quantum dots in magnetic fields: Phase diagram and broken symmetry of the Chamon-Wen edge
S. M. Reimann, M. Koskinen, M. Manninen +1
Quantum dots in magnetic fields are studied within the current spin density functional formalism avoiding any spatial symmetry restrictions of the solutions. We find that the maxim…