Collective excitation of trapped degenerate Fermi gases

Abstract

We show that the slow driving of a focused laser beam through the cloud of trapped cold fermions allows for a creation of the collective excitation in the system. The method, proposed originally by us for bosons, seems to be quite feasible experimentally -- it requires only an appropriate change in time of the potential in atomic traps, as realized in laboratories already.

4 pages, 4 figures, version accepted for publication in J. Phys. B

References in corpus (4)

• A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
• Optical dipole traps and atomic waveguides based on Bessel light beams
• Simple method for excitation of a Bose-Einstein condensate
• A method for collective excitation of Bose-Einstein condensate

Cited by in corpus (8)

• Dynamics of shallow dark solitons in a trapped gas of impenetrable bosons
• Density profile of a harmonically trapped ideal Fermi gas in arbitrary dimension
• Free expansion of fermionic dark solitons in a boson-fermion mixture
• Quantum dark solitons in ultracold one-dimensional Bose and Fermi gases
• Black soliton in a quasi-one-dimensional trapped fermion-fermion mixture
• Emergence of dark soliton signatures in a one-dimensional unpolarized attractive Fermi gas on a ring
• Collective dynamics of fermion clouds in cigar-shaped traps
• Generating nonequilibrium stationary state from ground state condensate through an almost-adiabatic cycle