Absence of local conserved quantity in the Heisenberg model with next-nearest-neighbor interaction
arXiv:2403.04522 · doi:10.1007/s10955-024-03326-4
Abstract
We rigorously prove that the Heisenberg chain with next-nearest-neighbor interaction, which is anticipated to be non-integrable, is indeed non-integrable in the sense that this system has no nontrivial local conserved quantity. Our result covers two important models, the Majundhar-Ghosh model and the Shastry-Sutherland model, as special cases. These models are shown to be non-integrable while have some solvable energy eigenstates.
27 pages, no figure
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- Proof of the absence of local conserved quantities in general spin-1/2 chains with symmetric nearest-neighbor interaction
- Complete Classification of Integrability and Non-integrability for Spin-1/2 Chain with Symmetric Nearest-Neighbor Interaction
- Absence of local conserved charges of the Fredkin spin chain and its truncated versions
- Stable infinite-temperature eigenstates in SU(2)-symmetric nonintegrable models
- Temperature and conditions for thermalization after canonical quenches