# Hydrodynamic excitations of trapped dipolar fermions

Source: [Hydrodynamic excitations of trapped dipolar fermions](<https://www.sota2.com/research/paper/68fa1e467a2b558e2932153c>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-23T14:39:44.514Z

Authors: K. Goral, M. Brewczyk, K. Rzazewski

Published: 2002-08-30T15:03:23.000Z

## Abstract

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.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/0208598>)

[PDF](<https://arxiv.org/pdf/cond-mat/0208598.pdf>)