A new wavefunction design finally shows stripes in doped copper oxides?

Solving the quantum many-body problem for strongly interacting electrons is notoriously hard — even simple lattice models resist exact treatment at large scales. By organizing so-called backflow correlations hierarchically according to locality, this approach achieves better than 0.5% energy accuracy on lattices up to 16×16 sites and cleanly recovers stripe order when the lattice is hole-doped, a key feature debated in cuprate superconductor physics. The method is both systematically improvable and interpretable, bridging traditional variational methods with neural-network quantum states.