DMRG yields LMG ground energies to N=1400; on IBM hardware SQD stays within ~1% to ~17 particles while VQE does so only near N=6.
Simulating excited states of the lipkin model on a quantum computer,
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Benchmarking Quantum Simulations of the Lipkin-Meshkov-Glick Model Using Large Tensor Networks
DMRG yields LMG ground energies to N=1400; on IBM hardware SQD stays within ~1% to ~17 particles while VQE does so only near N=6.