Ultracold-atom collision study reveals sharply enhanced dynamical inertia of fast impurities in Bose-Einstein condensates near resonance, providing evidence for many-body polaron dressing in strongly coupled quantum regimes.

Ultracold-atom collision study reveals sharply enhanced dynamical inertia of fast impurities in Bose-Einstein condensates near resonance, providing evidence for many-body polaron dressing in strongly coupled quantum regimes.