H-EFT-VA enforces a UV-cutoff initialization to guarantee inverse-polynomial gradient variance while preserving volume-law entanglement and near-Haar purity in variational quantum algorithms.
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Entanglement entropy saturates to finite constants set by virtual bond structure in fully and partially dimerized phases of frustrated spin chains, showing multiple values and multi-band features in the partially dimerized case.
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H-EFT-VA: An Effective-Field-Theory Variational Ansatz with Provable Barren Plateau Avoidance
H-EFT-VA enforces a UV-cutoff initialization to guarantee inverse-polynomial gradient variance while preserving volume-law entanglement and near-Haar purity in variational quantum algorithms.
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Entanglement signature of fully and partially dimerized phases in frustrated spin chains
Entanglement entropy saturates to finite constants set by virtual bond structure in fully and partially dimerized phases of frustrated spin chains, showing multiple values and multi-band features in the partially dimerized case.