Repulsive Fermi and Bose polarons in quantum gases

F Scazza, M Zaccanti, P Massignan, MM Parish… - Atoms, 2022 - mdpi.com
Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary
excitations of a many-particle background. In the field of ultracold atoms, the study of the …

Few-body Bose gases in low dimensions—A laboratory for quantum dynamics

SI Mistakidis, AG Volosniev, RE Barfknecht, T Fogarty… - Physics Reports, 2023 - Elsevier
Cold atomic gases have become a paradigmatic system for exploring fundamental physics,
which at the same time allows for applications in quantum technologies. The accelerating …

Non-equilibrium quantum dynamics and formation of the Bose polaron

MG Skou, TG Skov, NB Jørgensen, KK Nielsen… - Nature Physics, 2021 - nature.com
Advancing our understanding of non-equilibrium phenomena in quantum many-body
systems remains one of the greatest challenges in physics. Here we report on the …

Orthogonality catastrophe as a consequence of the quantum speed limit

T Fogarty, S Deffner, T Busch, S Campbell - Physical Review Letters, 2020 - APS
A remarkable feature of quantum many-body systems is the orthogonality catastrophe that
describes their extensively growing sensitivity to local perturbations and plays an important …

[HTML][HTML] Modulational instability and droplet formation in Bose-Bose mixtures with Lee-Huang-Yang correction and polaron-like impurity

CB Tabi, S Veni, E Wamba, TC Kofané - Physics Letters A, 2023 - Elsevier
This letter studies the excitation of nonlinear patterns on the one-dimensional (1D) quantum
droplet in the presence of polaron-like impurity under modulational instability (MI) activation …

Formation and quench of homonuclear and heteronuclear quantum droplets in one dimension

SI Mistakidis, T Mithun, PG Kevrekidis… - Physical Review …, 2021 - APS
We study the impact of beyond Lee-Huang-Yang (LHY) physics, especially due to
intercomponent correlations, in the ground state and the quench dynamics of one …

Theory of a resonantly interacting impurity in a Bose-Einstein condensate

M Drescher, M Salmhofer, T Enss - Physical Review Research, 2020 - APS
We investigate a Bose-Einstein condensate in strong interaction with a single impurity
particle. While this situation has received considerable interest in recent years, the regime of …

Universal aspects of a strongly interacting impurity in a dilute Bose condensate

P Massignan, N Yegovtsev, V Gurarie - Physical review letters, 2021 - APS
We study the properties of an impurity immersed in a weakly interacting Bose gas, ie, of a
Bose polaron. In the perturbatively tractable limit of weak impurity-boson interactions many …

Mobile impurity in a Bose-Einstein condensate and the orthogonality catastrophe

NE Guenther, R Schmidt, GM Bruun, V Gurarie… - Physical Review A, 2021 - APS
We analyze the properties of an impurity in a dilute Bose-Einstein condensate (BEC). The
quasiparticle residue of a static impurity in an ideal BEC is known to vanish exponentially …

Real-space dynamics of attractive and repulsive polarons in Bose-Einstein condensates

M Drescher, M Salmhofer, T Enss - Physical Review A, 2019 - APS
We investigate the formation of a Bose polaron when a single impurity in a Bose-Einstein
condensate is quenched from a noninteracting to an attractively interacting state in the …