We investigate the effects of curving trajectories by applying external force fields on a particle in a billiard. We investigate two special cases: a constant force field and a parabolic potential. These perturbations change the stability conditions and can lead to formation of elliptical orbits in otherwise hyperbolic billiards. We demonstrate these effects experimentally with ultra-cold atoms in atom-optic billiards.
|Original language||American English|
|Number of pages||8|
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|State||Published - 14 May 2002|