A specific quantum lattice becomes more organized and structured as it gets hotter, defying the common belief that heat always causes disorder.
April 23, 2026
Original Paper
Exploring Entropic Orders: High Temperature Continuous Symmetry Breaking, Chiral Topological States and Local Commuting Projector Models
arXiv · 2604.18694
The Takeaway
Most things in nature melt or break down when they are heated because thermal energy shakes atoms apart. This new quantum model proves that some systems actually experience order at high temperatures. The system enters a more structured, chiral state as the thermometer rises. This behavior bypasses a famous physics theorem that says this kind of order should be impossible in low dimensions. It opens up a new class of materials that could remain stable or even perform better in extreme heat environments.
From the abstract
High temperature is usually expected to destroy order: as the Gibbs state approaches the infinite-temperature limit, it becomes an equal-weight ensemble over all states and the system is generically disordered. Recent works showed that entropic order can violate this expectation through coupling to bosons in classical lattice models and quantum field theories, where the ordered states have higher entropy. Here we present new analytic methods for constructing quantum lattice models that exhibit e