Beliaev Damping of Quasiparticles in a Bose-Einstein Condensate

N. Katz, J. Steinhauer, R. Ozeri, N. Davidson

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

We report a measurement of the suppression of collisions of quasiparticles with ground state atoms within a Bose-Einstein condensate at low momentum. These collisions correspond to Beliaev damping of the excitations, in the previously unexplored regime of the continuous quasiparticle energy spectrum. We use a hydrodynamic simulation of the expansion dynamics, with the Beliaev damping cross section, in order to confirm the assumptions of our analysis.

Original languageAmerican English
JournalPhysical Review Letters
Volume89
Issue number22
DOIs
StatePublished - 2002
Externally publishedYes

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