English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We theoretically investigate the behavior of a moving impurity immersed in asea of fermionic atoms that are confined in a quasi-periodic (bichromatic)optical lattice, within a standard variational approach. We consider bothrepulsive and attractive contact interactions for such a simplest many-bodylocalization problem of Fermi polarons. The variational approach enables us toaccess relatively large systems and therefore may be used to understandmany-body localization in the thermodynamic limit. The energy and wave-functionof the polaron states are found to be strongly affected by the quasi-randomlattice potential and their experimental measurements (i.e., viaradio-frequency spectroscopy or quantum gas microscope) therefore provide asensitive way to underpin the localization transition. We determine a phasediagram by calculating two critical quasi-random disorder strengths, whichcorrespond to the onset of the localization of the ground-state polaron stateand the many-body localization of all polaron states, respectively. Ourpredicted phase diagram could be straightforwardly examined in currentcold-atom experiments.

Fermi polaron in a one-dimensional quasi-periodic optical lattice: the simplest many-body localization challenge