Abstract

We Investigate The Nonequilibrium Quantum Dynamics Of One And Two Heavy Fermionic Impurities Being Harmonically Trapped And Repulsively Interacting With A Finite Ensemble Of Majority Fermions. A Quench Of The Potential Of The Majority Species From A Double-Well To A Harmonic Trap Is Applied, Enforcing Its Counterflow, Which In Turn Perturbs The Impurities. For Weak Repulsions, It Is Shown That The Mixture Undergoes A Periodic Mixing And Demixing Dynamics, While Stronger Interactions Lead To A More Pronounced Dynamical Spatial Separation. In The Presence Of Correlations, The Impurity Exhibits An Expansion Dynamics Which Is Absent In The Hartree-Fock Case, Resulting In An Enhanced Degree Of Miscibility. We Generalize Our Results To Different Impurity Masses And Demonstrate That The Expansion Amplitude Of The Impurity Reduces For A Larger Mass. Furthermore, We Showcase That The Majority Species Is Strongly Correlated And A Phase Separation Occurs On The Two-Body Level. Most Importantly, Signatures Of Attractive Impurity-Impurity Induced Interactions Mediated By The Majority Species Are Identified In The Time Evolution Of The Two-Body Correlations Of The Impurities, A Result That Is Supported By Inspecting Their Spatial Size.

Department(s)

Physics

Comments

Deutsche Forschungsgemeinschaft, Grant 390715994

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

01 May 2020

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Physics Commons

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