Energies and damping rates of elementary excitations in spin-1 Bose-Einstein-condensed gases

Gergely Szirmai, Péter Szépfalusy, Krisztián Kis-Szabó

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The finite temperature Green’s function technique is used to calculate the energies and damping rates of the elementary excitations of homogeneous, dilute, spin-1 Bose gases below the Bose-Einstein condensation temperature in both the density and spin channels. For this purpose a self-consistent dynamical Hartree-Fock model is formulated, which takes into account the direct and exchange processes on equal footing by summing up certain classes of Feynman diagrams. The model is shown to satisfy the Goldstone theorem and to exhibit the hybridization of one-particle and collective excitations correctly. The results are applied to gases of [Formula Presented] and [Formula Presented] atoms.

Original languageEnglish
Pages (from-to)19
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume68
Issue number2
DOIs
Publication statusPublished - 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Energies and damping rates of elementary excitations in spin-1 Bose-Einstein-condensed gases'. Together they form a unique fingerprint.

  • Cite this