Theory of excitation of Rydberg polarons in an atomic quantum gas
Abstract
We present a quantum manybody description of the excitation spectrum of Rydberg polarons in a Bose gas. The manybody Hamiltonian is solved with a functional determinant approach, and we extend this technique to describe Rydberg polarons of finite mass. Meanfield and classical descriptions of the spectrum are derived as approximations of the manybody theory. The various approaches are applied to experimental observations of polarons created by excitation of Rydberg atoms in a strontium BoseEinstein condensate.
 Publication:

Physical Review A
 Pub Date:
 February 2018
 DOI:
 10.1103/PhysRevA.97.022707
 arXiv:
 arXiv:1709.01838
 Bibcode:
 2018PhRvA..97b2707S
 Keywords:

 Physics  Atomic Physics;
 Condensed Matter  Quantum Gases
 EPrint:
 14 pages, 9 figures. arXiv admin note: substantial text overlap with arXiv:1706.03717