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Sponsored Design Multi-Agent AI Systems Using MCP and A2A: Engineer your own Pyt Design Multi-Agent AI Systems Using MCP and A2A: Engineer your own Pyt

Author

Kangle Li

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Preprint Aug 2026

Topological phases and quantum criticality from $SU(2)$ Chern-Simons-matter theories

Motivated by recent numerical studies where various $SU(2)$ Chern-Simons-matter theories emerge, we analytically study topological phases and quantum criticality in two-dimensional systems described by such theories. First, we classify $SU(2)_k$ topological orders in all lattice spin systems with a $p4\times SO(3)$ sym...

Yunchao Hao, Ying-Cheng Li, Kangle Li et al. · 0 citations
Preprint Aug 2026

Local observable errors from truncating interaction tails in gapped quantum lattice systems

We bound the error in ground-state expectations of local observables caused by truncating the spatial tails of a gapped quantum lattice Hamiltonian. We show that the error is controlled by the interaction strength discarded near each site, rather than by the extensive norm of the omitted Hamiltonian. If the gap remains...

Kangle Li · 0 citations

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