Efficient Local Classical Shadow Tomography with Number Conservation.

Shadow tomography aims to build a classical description of a quantum state from a sequence of simple random measurements. Physical observables are then reconstructed from the resulting classical shadow. Shadow protocols which use single-body random measurements are simple to implement and capture few-body observables efficiently, but do not apply to systems with fundamental number conservation laws, such as ultracold atoms.

Low back pain presentations to rural, regional, and metropolitan emergency departments.

Objective: To describe the context of low back pain (LBP) presentations to emergency departments (EDs) by remoteness areas, hospital delineation level and staffing portfolios.

Design: A retrospective observational study using routinely captured ED and admission data over a 5-year period (July 2014-June 2019).

Settings: Thirty seven EDs across a large health district in NSW, Australia, covering major cities, inner regional areas and outer regional areas.

Perspectives of emergency department clinicians on the challenges of addressing low back pain in the emergency setting: A qualitative study.

Objective: To identify and explore ED clinician perspectives on: (i) why patients with low back pain (LBP) present to the ED and are admitted into hospital from ED; (ii) barriers and enablers they face when providing care to patients with LBP; and (iii) strategies to improve the care of patients with LBP, and associated care processes, in the ED.

Methods: We undertook a qualitative exploratory study with ED clinicians (medical officers, nurses and physiotherapists) at a tertiary-level public hospital in New South Wales, Australia, using focus groups and individual interviews. We used thematic analysis to synthesise participant responses to answer the predefined research questions.

Two Phases Inside the Bose Condensation Dome of Yb_{2}Si_{2}O_{7}.

Recent experimental data on Bose-Einstein condensation of magnons in the spin-gap compound Yb_{2}Si_{2}O_{7} revealed an asymmetric Bose-Einstein condensation dome [G. Hester et al., Phys.