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


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
Issue number22
StatePublished - 2002
Externally publishedYes


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