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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report on a combined experimental and theoretical study of the low-entropyMott transition for interacting bosons trapped in a three-dimensional (3D)cubic lattice -- namely, the interaction-induced superfluid-to-normal phasetransition in the vicinity of the zero-temperature Mott transition. Ouranalysis relies on the measurement of the 3D momentum distribution, whichallows us to extract the momentum-space density $\rho({\bf k}={\bf 0})$ at thecenter of the Brillouin zone. Upon varying the ratio between the interaction$U$ and the tunnelling energy $J$ across the superfluid transition, we observethat $\rho({\bf k}={\bf 0})$ exhibits a sharp transition at a value of $U/J$consistent with the bulk prediction from quantum Monte Carlo. In addition, thevariation of $\rho({\bf k}={\bf 0})$ with $U/J$ exhibits a critical behaviorconsistent with the expected 3D XY universality class. Our results show thatthe tomographic reconstruction of the momentum distribution of ultracold bosonscan reveal traits of the critical behavior of the superfluid transition even inan inhomogeneous trapped system.

Studying the low-entropy Mott transition of bosons in a three-dimensional optical lattice by measuring the full momentum-space density