Dielectric formalism and damping of collective modes in trapped Bose-Einstein condensed gases

Abstract

We present the general dielectric formalism for Bose-Einstein condensed systems in external potential at finite temperatures. On the basis of a model arising within this framework as a first approximation in an intermediate temperature region for large condensate we calculate the damping of low-energy excitations in the collisionless regime.

4 pages, no figures, RevTeX

References in corpus (7)

• Landau damping in dilute Bose gases
• Damping of low-energy excitations of a trapped Bose condensate at finite temperatures
• Collective excitations of Bose-Einstein condensed gases at finite temperatures
• Low-energy elementary excitations of a trapped Bose-condensed gas
• A theoretical study on the damping of collective excitations in a Bose-Einstein condensate
• Hydrodynamic excitations of Bose condensates in anisotropic traps
• Excitations of a Bose-Einstein Condensate at Non-Zero Temperature: A Study of Zeroth, First and Second Sound

Cited by in corpus (13)

• Collisionless dynamics of dilute Bose gases: Role of quantum and thermal fluctuations
• A number-conserving approach to a minimal self-consistent treatment of condensate and non-condensate dynamics in a degenerate Bose gas
• Shifts and widths of collective excitations in trapped Bose gases by the dielectric formalism
• The response of Bose-Einstein condensates to external perturbations at finite temperature
• The Kohn mode for trapped Bose gases within the dielectric formalism
• The structure of the perturbation series of the spin-1 Bose gas at low temperatures
• Quantum Decoherence of Phonons in Bose-Einstein Condensates
• Limitations of squeezing due to collisional decoherence in Bose-Einstein condensates
• Energies and damping rates of elementary excitations in spin-1 Bose-Einstein condensed gases
• Trends in Resonance Energy Shifts and Decay Rates for Bose Condensates in a Harmonic Trap
• Properties of excitations in systems with a spinor Bose-Einstein condensate
• Collapse and revival of excitations in Bose-Einstein condensates
• Density excitations of a harmonically trapped ideal gas