[HTML][HTML] 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 …

Bose polarons near quantum criticality

ZZ Yan, Y Ni, C Robens, MW Zwierlein - Science, 2020‏ - science.org
The emergence of quasiparticles in interacting matter represents one of the cornerstones of
modern physics. However, in the vicinity of a quantum critical point, the existence of …

Impurities and polarons in bosonic quantum gases: a review on recent progress

F Grusdt, N Mostaan, E Demler, LAP Ardila - arxiv preprint arxiv …, 2024‏ - arxiv.org
This review describes the field of Bose polarons, arising when mobile impurities are
immersed into a bosonic quantum gas. The latter can be realized by a Bose-Einstein …

Analyzing a Bose polaron across resonant interactions

LA Peña Ardila, NB Jørgensen, T Pohl, S Giorgini… - Physical Review A, 2019‏ - APS
Recently, two independent experiments reported the observation of long-lived polarons in a
Bose-Einstein condensate, providing an excellent setting to study the generic scenario of a …

Observation of a lee-huang-yang fluid

TG Skov, MG Skou, NB Jørgensen, JJ Arlt - Physical Review Letters, 2021‏ - APS
We observe monopole oscillations in a mixture of Bose-Einstein condensates, where the
usually dominant mean-field interactions are canceled. In this case, the system is governed …

Using polarons for sub-nk quantum nondemolition thermometry in a bose-einstein condensate

M Mehboudi, A Lampo, C Charalambous, LA Correa… - Physical review …, 2019‏ - APS
We introduce a novel minimally disturbing method for sub-nK thermometry in a Bose-
Einstein condensate (BEC). Our technique is based on the Bose polaron model; namely, an …

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 …

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 …

Bose polaron and the Efimov effect: A Gaussian-state approach

A Christianen, JI Cirac, R Schmidt - Physical Review A, 2022‏ - APS
Since the Efimov effect was introduced, a detailed theoretical understanding of Efimov
physics has been developed in the few-body context. However, it has proven challenging to …

Phase diagram for strong-coupling Bose polarons

A Christianen, JI Cirac, R Schmidt - SciPost Physics, 2024‏ - scipost.org
Important properties of complex quantum many-body systems and their phase diagrams can
often already be inferred from the impurity limit. The Bose polaron problem describing an …