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@article{Barnett:2021:10.1103/PhysRevResearch.3.033212,
author = {Barnett, R and Jager, J},
doi = {10.1103/PhysRevResearch.3.033212},
journal = {Physical Review Research},
pages = {1--10},
title = {A stochastic fields approach to the quench dynamics of a one dimensional Bose polaron},
url = {http://dx.doi.org/10.1103/PhysRevResearch.3.033212},
volume = {3},
year = {2021}
}

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TY  - JOUR
AB  - We consider the dynamics of a quantum impurity after a sudden interaction quench into a onedimensional degenerate Bose gas. We use the Keldysh path integral formalism to derive a truncatedWigner like approach that takes the back action of the impurity onto the condensate into accountalready on the mean-field level and further incorporates thermal and quantum effects up to oneloop accuracy. This framework enables us not only to calculate the real space trajectory of theimpurity but also the absorption spectrum. We find that quantum corrections and thermal effectsplay a crucial role for the impurity momentum at weak to intermediate impurity-bath couplings.Furthermore, we see the broadening of the absorption spectrum with increasing temperature.
AU  - Barnett,R
AU  - Jager,J
DO  - 10.1103/PhysRevResearch.3.033212
EP  - 10
PY  - 2021///
SN  - 2643-1564
SP  - 1
TI  - A stochastic fields approach to the quench dynamics of a one dimensional Bose polaron
T2  - Physical Review Research
UR  - http://dx.doi.org/10.1103/PhysRevResearch.3.033212
UR  - https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.033212
UR  - http://hdl.handle.net/10044/1/91296
VL  - 3
ER  -

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