Abstract
Nonresonant light scattering off atomic Bose-Einstein condensates 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 the condensates.
- Received 1 November 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.190403
©2005 American Physical Society