Nature Physics, Published online: 14 September 2026; doi:10.1038/s41567-026-03435-9
Conventional sources of muonium — a bound state of a positively charged muon and an electron — produce diffuse thermal beams. Now an intense, superthermal muonium beam with a velocity distribution far narrower than existing sources has been achieved.
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- An intense superthermal muonium beam
- Criticality from competitionNature Physics, Published online: 14 September 2026; doi:10.1038/s41567-026-03450-w Conformal field theories describe universal physics at quantum critical points, but it is hard to find microscopic models that realize particular field theories. Studying competing boundary conditions of topological phases provides a systematic way to build such models.
- Microrotors make wavesNature Physics, Published online: 14 September 2026; doi:10.1038/s41567-026-03452-8 Thousands of 3D-printed microscopic rotors spontaneously synchronize their motion when assembled into a lattice. Counterintuitively, small imperfections among individual motors drive the propagation of waves across such artificial active matter.
- Digital quantum simulations of scattering in quantum field theories using W statesNature Physics, Published online: 11 September 2026; doi:10.1038/s41567-026-03436-8 Quantum simulations of field-theory scattering require preparing particles and following their collision dynamics. A digital quantum simulation now reveals the inelastic production of particles in one-dimensional Ising field theory.
- A digital twin should make a risky claimNature Physics, Published online: 11 September 2026; doi:10.1038/s41567-026-03411-3 As the term ‘digital twin’ spreads across science and technology, it risks losing scientific meaning. Such a twin should not denote just a digital replica, but a computational model that can be updated, tested against intervention and shown to fail.
- Trion Hall effect in electron–hole double layersNature Physics, Published online: 10 September 2026; doi:10.1038/s41567-026-03444-8 A trion fluid—which forms when excitons bind to an extra electron or hole—is expected to exhibit a Hall effect in magnetic fields. Now, this is demonstrated in electron–hole double layers.
- Electric fields take control of ferronsNature Physics, Published online: 10 September 2026; doi:10.1038/s41567-026-03434-w Ferrons are the quasiparticles associated with the collective excitations of spontaneous polarization. External electric fields have now been shown to tune their properties in a nonvolatile manner.
- Reproducibility by designNature Physics, Published online: 09 September 2026; doi:10.1038/s41567-026-03473-3 The sensitivity of moiré materials to crystal quality and twist angle can make experimental results difficult to replicate. Reproducibility should therefore be built into material growth, device fabrication and experimental design from the outset.
