Hydrodynamic excitations of trapped dipolar fermions

Journal Article · Sat Feb 01 00:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.025601· OSTI ID:20633787

Goral, Krzysztof; Rzazewski, Kazimierz ^[1]; Brewczyk, Miroslaw ^[2]

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1. Center for Theoretical Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668 Warsaw (Poland)
2. Uniwersytet w Bialymstoku, ulica Lipowa 41, 15-424 Bialystok (Poland)

A single-component Fermi gas of polarized dipolar particles in a harmonic trap can undergo a mechanical collapse due to the attractive part of the dipole-dipole interaction. This phenomenon can be conveniently manipulated by the shape of the external trapping potential. We investigate the signatures of the instability by studying the spectrum of low-lying collective excitations of the system in the hydrodynamic regime. To this end, we employ a time-dependent variational method as well as exact numerical solutions of the hydrodynamic equations of the system.

• OSTI ID: 20633787
• Journal Information: Physical Review. A, Vol. 67, Issue 2; Other Information: DOI: 10.1103/PhysRevA.67.025601; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COLLECTIVE EXCITATIONS
DIPOLES
EQUATIONS
FERMI GAS
FERMIONS
INSTABILITY
NUMERICAL SOLUTION
POTENTIALS
TIME DEPENDENCE
TRAPPING
TRAPS
VARIATIONAL METHODS