A VQE using gauge-aware ansatze recovers ground states and static string breaking in a two-leg-ladder Z2 lattice gauge theory, with gradient variances that do not collapse for up to 23 qubits.
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Barren-plateau free variational quantum simulation of Z2 lattice gauge theories
A VQE using gauge-aware ansatze recovers ground states and static string breaking in a two-leg-ladder Z2 lattice gauge theory, with gradient variances that do not collapse for up to 23 qubits.