Abstract
We Unravel The Nonequilibrium Dynamics Of Two Fermionic Impurities Immersed In A One-Dimensional Bosonic Gas Following An Interspecies Interaction Quench. Monitoring The Temporal Evolution Of The Single-Particle Density Of Each Species We Reveal The Existence Of Four Distinct Dynamical Regimes. For Weak Interspecies Repulsions Both Species Either Perform A Breathing Motion Or The Impurity Density Splits Into Two Parts Which Interact And Disperse Within The Bosonic Cloud. Turning To Strong Interactions We Observe The Formation Of Dark-Bright States Within The Mean-Field Approximation. However, The Correlated Dynamics Shows That The Fermionic Density Splits Into Two Repelling Density Peaks Which Either Travel Toward The Edges Of The Bosonic Cloud Where They Equilibrate Or They Approach An Almost Steady State Propagating Robustly Within The Bosonic Gas Which Forms Density Dips At The Same Location. For These Strong Interspecies Interactions An Energy Transfer Process From The Impurities To Their Environment Occurs At The Many-Body Level, While A Periodic Energy Exchange From The Bright States (Impurities) To The Bosonic Species Is Identified In The Absence Of Correlations. Finally, Inspecting The One-Body Coherence Function For Strong Interactions Enables Us To Draw Conclusions On The Spatial Localization Of The Quench-Induced Fermionic Density Humps.
Recommended Citation
S. I. Mistakidis et al., "Correlated Quantum Dynamics Of Two Quenched Fermionic Impurities Immersed In A Bose-Einstein Condensate," Physical Review A, vol. 100, no. 2, article no. 023620, American Physical Society, Aug 2019.
The definitive version is available at https://doi.org/10.1103/PhysRevA.100.023620
Department(s)
Physics
International Standard Serial Number (ISSN)
2469-9934; 2469-9926
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
23 Aug 2019
Comments
Deutsche Forschungsgemeinschaft, Grant None