Nature Physics, Published online: 02 January 2025; doi:10.1038/s41567-024-02730-7
Collectives of self-driven particles display a plethora of behaviours that are gradually being discovered. Experiments with rotating particles in intermediate Reynolds flow now harness a mostly unexplored inertial regime for synthetic active matter.
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- Spinning into new regimes
- Fluids constructed atom by atomNature Physics, Published online: 02 January 2025; doi:10.1038/s41567-024-02646-2 Macroscopic fluid dynamics is usually thought to emerge from vast numbers of microscopic particles. Now, fluid-like behaviour has been observed in systems of startlingly few atoms.
- Emergent interaction-driven elliptic flow of few fermionic atomsNature Physics, Published online: 02 January 2025; doi:10.1038/s41567-024-02705-8 Hydrodynamics can describe the collective behaviour of many-body systems when all the relevant length scales are separable. Now, an experiment with ultracold atoms shows signatures of hydrodynamic behaviour in a regime where length scales are comparable.
- Observation of microscopic confinement dynamics by a tunable topological <i>θ</i>-angleNature Physics, Published online: 20 December 2024; doi:10.1038/s41567-024-02702-x Topological terms arise naturally in gauge theories but have been difficult to implement in quantum simulators. Now, a tunable topological θ-angle is demonstrated with a cold-atom platform.
- Publisher Correction: Heavy-tailed neuronal connectivity arises from Hebbian self-organizationNature Physics, Published online: 19 December 2024; doi:10.1038/s41567-024-02748-x Publisher Correction: Heavy-tailed neuronal connectivity arises from Hebbian self-organization
- Controlling interactions between high-frequency phonons and single quantum systems using phononic crystalsNature Physics, Published online: 18 December 2024; doi:10.1038/s41567-024-02697-5 The phonon density of states in diamond is engineered using phononic crystals to suppress single-phonon processes that induce decoherence in individual quantum emitters.
- Nishimori transition across the error threshold for constant-depth quantum circuitsNature Physics, Published online: 16 December 2024; doi:10.1038/s41567-024-02696-6 Measurements combined with post-processing of their outcomes can be used to prepare ordered quantum states. It has been shown that they can drive a Nishimori phase transition into a disordered state even in the presence of quantum errors.
- Author Correction: Real-space imaging of phase transitions in bridged artificial kagome spin iceNature Physics, Published online: 12 December 2024; doi:10.1038/s41567-024-02747-y Author Correction: Real-space imaging of phase transitions in bridged artificial kagome spin ice
