Nature Physics, Published online: 07 October 2026; doi:10.1038/s41567-026-03465-3
Neutron spectroscopy measurements combined with tensor network simulations have placed the long-studied quantum spin-chain compound CuGeO3 in a spontaneously dimerized phase predicted in 1982. In this system, fractionalized excitations evolve from nearly free spinons to tightly bound triplons across energy scales within a single spectrum.
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- A long-sought phase in CuGeO<sub>3</sub> traces the full evolution of spin fractionalization
- Topological transitions in orbital-symmetry-controlled chemical reactionsNature Physics, Published online: 06 October 2026; doi:10.1038/s41567-026-03455-5 The application of ideas from topological band theory to reaction pathways in molecular systems with strong electronic interactions is challenging. Now, a many-body framework based on Green’s functions is introduced to solve this problem.
- Reactions become topologicalNature Physics, Published online: 06 October 2026; doi:10.1038/s41567-026-03472-4 Chemical reactions are often guided by orbital symmetries, but the usual orbital picture can fail when electrons are strongly correlated. A Green’s function approach now reveals that symmetry-forbidden reactions retain a topological signature.
- Fully developed active turbulence defined through a non-equilibrium phase transitionNature Physics, Published online: 30 September 2026; doi:10.1038/s41567-026-03408-y The continuous energy injection in active fluids leads to active turbulence. Now, geometric and mechanical analyses reveal a phase transition that leads to fully developed active turbulence.
- Deterministic and programmable fusion for the scalable generation of photonic graph statesNature Physics, Published online: 30 September 2026; doi:10.1038/s41567-026-03471-5 Graph states entangle many photons in a special structure that is useful for several quantum protocols. Making graph states is often probabilistic and inefficient, but now a deterministic approach using superconducting qubits has been demonstrated.
- Multiscale transitional flow in anisotropic nanoparticle suspensions revealed by time-resolved X-ray scatter microscopyNature Physics, Published online: 29 September 2026; doi:10.1038/s41567-026-03467-1 The trajectories of embedded particles provide a route for probing fluid flow dynamics. An X-ray scatter microscopy approach that enables precise monitoring of non-sphericalnanoparticles now reveals multiscale dynamics in complex fluids.
- Microscopy of microstructuresNature Physics, Published online: 29 September 2026; doi:10.1038/s41567-026-03475-1 Complex fluids display unusual flow behaviour that originates from their microstructure, but observing this structure has been challenging. Now, X-ray scattering microscopy is fast enough to follow the tumbling of nanoparticles.
- Hyperbolic wave attractorsNature Physics, Published online: 28 September 2026; doi:10.1038/s41567-026-03453-7 Wave propagation in irregular cavities made from conventional isotropic media is typically chaotic. Now odd-shaped cavities made from hyperbolic metamaterials are shown to suppress chaotic wave dynamics and produce stable geometric wave patterns.
