Collective Excitations Of Dipolar Gases Based On Local Tunneling In Superlattices
Abstract
The Collective Dynamics Of A Dipolar Fermionic Quantum Gas Confined In A One-Dimensional Double-Well Superlattice Is Explored. The Fermionic Gas Resides In A Paramagnetic-Like Ground State In The Weak Interaction Regime, Upon Which A New Type Of Collective Dynamics Is Found When Applying A Local Perturbation. This Dynamics Is Composed Of The Local Tunneling Of Fermions In Separate Supercells, And Is A Pure Quantum Effect, With No Classical Counterpart. Due To The Presence Of The Dipolar Interactions The Local Tunneling Transports Through The Entire Superlattice, Giving Rise To A Collective Dynamics. A Well-Defined Momentum-Energy Dispersion Relation Is Identified In The Ab-Initio Simulations Demonstrating The Phonon-Like Behavior. The Phonon-Like Characteristic Is Also Confirmed By An Analytical Description Of The Dynamics Within A Semiclassical Picture.
Recommended Citation
L. Cao et al., "Collective Excitations Of Dipolar Gases Based On Local Tunneling In Superlattices," Chemical Physics, vol. 482, pp. 303 - 310, Elsevier, Jan 2017.
The definitive version is available at https://doi.org/10.1016/j.chemphys.2016.08.026
Department(s)
Physics
International Standard Serial Number (ISSN)
0301-0104
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier, All rights reserved.
Publication Date
12 Jan 2017
Comments
Deutsche Forschungsgemeinschaft, Grant None