14 papers
Absence of nontrivial local conserved quantities in a class of -symmetric spin-1 chains
Shunsuke Sengoku, Haruki Watanabe
We prove the absence of nontrivial local conserved quantities in a class of -symmetric spin- chains with nearest-neighbor interactions in which some of the quadrupolar cou…
Quantized topological invariant of symmetry-projected Gibbs states
Weiguang Cao, Haruki Watanabe
We study Gibbs states projected onto the symmetric sector of contractible one-form symmetries. In a three-dimensional cluster-model interpolation, this projection stabilizes symmet…
Distinct finite-temperature phase diagrams of non-invertible Kennedy--Tasaki duals
Weiguang Cao, Haruki Watanabe
Do two Hamiltonians related by a non-invertible transformation necessarily share the same finite-temperature phase diagram? For a cluster-model interpolation and its Kennedy…
Phase distinction of Gibbs states without symmetry breaking: topological invariants of the 3D toric code
Haruki Watanabe
We study the finite-temperature topological order of the three-dimensional toric code in a generic magnetic field, where every higher-form symmetry is explicitly bro…
Monte Carlo Study of the Phase Transition of the Model on a Diamond Lattice
Sena Watanabe, Yukitoshi Motome, Haruki Watanabe
We study the phase transition of the classical model on a diamond lattice by Monte Carlo simulations using the Wolff cluster algorithm. Finite-size scaling (FSS) analysis of t…
Topological Phase Transitions and Their Thermodynamic Fate in Arbitrary- Pyrochlore Spin Ice
Sena Watanabe, Yukitoshi Motome, Haruki Watanabe
We develop a self-contained theoretical framework that classifies the topological phases and critical phenomena of classical pyrochlore magnets with arbitrary spin , subject to…