2 papers
cond-mat.stat-mech2005
Transition to the Giant Vortex State in an Harmonic Plus Quartic Trap
H. Fu, E. Zaremba
We consider a rapidly rotating Bose-condensed gas in an harmonic plus quartic trap. At sufficiently high rotation rates the condensate acquires an annular geometry with the superpo…
cond-mat.mtrl-sci2004
Novel low-energy collective excitation at metal surfaces
V. M. Silkin, A. Garcia-Lekue, J. M. Pitarke +3
A novel collective excitation is predicted to exist at metal surfaces where a two-dimensional surface-state band coexists with the underlying three-dimensional continuum. This is a…