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Formation of Quantum Shock Waves by Merging and Splitting Bose-Einstein Condensates
J. J. Chang, P. Engels, M. A. Hoefer
The processes of merging and splitting dilute-gas Bose-Einstein condensates are studied in the nonadiabatic, high-density regime. Rich dynamics are found. Depending on the experime…
Observation of Faraday Waves in a Bose-Einstein Condensate
P. Engels, C. Atherton, M. A. Hoefer
Faraday waves in a cigar-shaped Bose-Einstein condensate are created. It is shown that periodically modulating the transverse confinement, and thus the nonlinear interactions in th…
Spin momentum transfer and Oersted field induce a vortex nano-oscillator in thin ferromagnetic film devices
M. A. Hoefer, T. J. Silva
A nonlinear model of spin-wave excitation involving a point contact in a thin ferromagnetic film that includes the Oersted magnetic field contribution is presented. We consider the…
On Dispersive and Classical Shock Waves in Bose-Einstein Condensates and Gas Dynamics
M. A. Hoefer, M. J. Ablowitz, I. Coddington +3
A Bose-Einstein condensate (BEC) is a quantum fluid that gives rise to interesting shock wave nonlinear dynamics. Experiments depict a BEC that exhibits behavior similar to that of…