A gauge-covariant PEPS ansatz with virtual flux tensors ensures translation-invariant physical expectation values for 2D interacting systems in a magnetic field, allowing gauge-independent simulations without enlarged magnetic unit cells.
Brown, Bloch electrons in a uniform magnetic field, Phys
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Derives closed-form quasienergy spectra and Chern numbers for flux-switching Harper-Hofstadter models and maps topological phases via Diophantine gap labeling.
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Gauge-covariant projected entangled paired states for interacting systems in a magnetic field
A gauge-covariant PEPS ansatz with virtual flux tensors ensures translation-invariant physical expectation values for 2D interacting systems in a magnetic field, allowing gauge-independent simulations without enlarged magnetic unit cells.
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Flux-switching Floquet engineering
Derives closed-form quasienergy spectra and Chern numbers for flux-switching Harper-Hofstadter models and maps topological phases via Diophantine gap labeling.