Authors predict and experimentally observe 4D tensor singularities evolving into 3D Euler-class descendants in a superconducting circuit via non-Abelian quantum geometry measurements.
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A Grassmann CTMRG tensor network method is introduced for 1D fermionic models and tested on the Hubbard model with magnetic field to capture phase diagram features.
Derives universal angle-dependent corner contributions to charge fluctuations in higher-dimensional quantum systems, with benchmarks at O(3) critical points and even-odd effects in metals.
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Probing Tensor Singularities and Their Euler-Class Descendants via Non-Abelian Quantum Geometry Measurement
Authors predict and experimentally observe 4D tensor singularities evolving into 3D Euler-class descendants in a superconducting circuit via non-Abelian quantum geometry measurements.
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Grassmann corner transfer-matrix renormalization group approach to one-dimensional fermionic models
A Grassmann CTMRG tensor network method is introduced for 1D fermionic models and tested on the Hubbard model with magnetic field to capture phase diagram features.
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Corner Charge Fluctuations in Higher Dimensions
Derives universal angle-dependent corner contributions to charge fluctuations in higher-dimensional quantum systems, with benchmarks at O(3) critical points and even-odd effects in metals.