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Exact solutions for interacting boson systems under rotation
Thomas Papenbrock, George F. Bertsch
We study a class of interacting, harmonically trapped boson systems at angular momentum L. The Hamiltonian leaves a L-dimensional subspace invariant, and this permits an explicit s…
Spin Structure of Many-Body Systems with Two-Body Random Interactions
Lev Kaplan, Thomas Papenbrock, Calvin W. Johnson
We investigate the spin structure of many-fermion systems with a spin-conserving two-body random interaction. We find a strong dominance of spin-0 ground states and considerable co…
Rotational spectra of weakly interacting Bose-Einstein condensates
Thomas Papenbrock, George F. Bertsch
We study the spectrum of rotating Bose-Einstein Condensates in the limit of weak repulsive interactions and present analytical and numerical results for energies and wave functions…
Invariant Manifolds and Collective Coordinates
T. Papenbrock, T. H. Seligman
We introduce suitable coordinate systems for interacting many-body systems with invariant manifolds. These are Cartesian in coordinate and momentum space and chosen such that sever…