2 papers
cond-mat.quant-gas2021
Stochastic-field approach to the quench dynamics of the one-dimensional Bose polaron
Jonas Jager, Ryan Barnett
We consider the dynamics of a quantum impurity after a sudden interaction quench into a one-dimensional degenerate Bose gas. We use the Keldysh path integral formalism to derive a…
cond-mat.quant-gas2019
Strong-coupling Bose polarons in 1D: Condensate deformation and modified Bogoliubov phonons
Jonas Jager, Ryan Barnett, Martin Will +1
We discuss the interaction of a quantum impurity with a one-dimensional degenerate Bose gas forming a Bose-polaron. In three spatial dimensions the quasiparticle is typically well…