Optically-Induced Polarons in Bose-Einstein Condensates: Monitoring Composite Quasiparticle Decay

Details Optically-Induced Polarons in Bose-Einstein Condensates: Monitoring Composite Quasiparticle Decay Optically-Induced Polarons in Bose-Einstein Condensates: Monitoring Composite Quasiparticle Decay

2004-11-11

arxiv.org/abs/cond-mat/0411301v2

Physics

Condensed Matter

Other Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.94.190403

Nonresonant light-scattering off atomic Bose-Einstein condensates (BECs) is predicted to give rise to hitherto unexplored composite quasiparticles: unstable polarons, i.e., local ``impurities'' dressed by virtual phonons. Optical monitoring of their spontaneous decay can display either Zeno or anti-Zeno deviations from the Golden Rule, and thereby probe the temporal correlations of elementary excitations in BECs.

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