Author(s): Richard Schmidt and Mikhail Lemeshko
Immersing a quantum impurity into a Bose-Einstein condensate causes a redistribution of the angular momentum between the impurity and the many-body environment leading to collective excitations. These excitations can be explained using a new quasiparticle: the “angulon”.
[Phys. Rev. Lett. 114, 203001] Published Mon May 18, 2015