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Preprint Aug 2026

Parity Anomaly as Modular Commutator with Massless Dirac Fermion

The modular commutator $J(A,B,C) = i\langle[K_{AB},K_{BC}]\rangle$ extracts the chiral central charge $c_-$ from a single bulk wavefunction of a \emph{gapped} 2d state, where $3J/\pi=c_-$. Inspired by the recent developments in the field of gapless symmetry-protected topological phases, we ask: what does the modular co...

Meng Zeng · 0 citations
Preprint Jul 2026

Universal Dynamic Scaling of 2D Quantum Ising Transition on the Fuzzy Sphere

We revisit the problem of \textit{real-time} quantum dynamics of the paradigmatic two dimensional transverse-field Ising model using the recently developed fuzzy sphere regularization scheme. By linearly ramping the transverse field from the paramagnetic phase to criticality, we study the finite-time scaling behavior o...

Meng Zeng, Yin Shuai, R. Moessner · 0 citations

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