Kun Chen

Charge transport, not interaction range, bounds the Lieb-Schultz-Mattis twist cost

Geometric interaction range can overestimate the energy cost of a Lieb-Schultz-Mattis twist. We prove that, under the stated assumptions, every sufficiently large admitted periodic ring with L>3R has an explicit O(1/L) upper bound on its full spectral gap. The bound is governed b...