Metastate analysis of the ground states of two-dimensional Ising spin glasses.

Hartmann, A K; Young, A P · Phys Rev E · 2023

basic_science · Level V

Where this comes from

Abstract

Using an efficient polynomial-time ground-state algorithm we investigate the Ising spin glass state at zero temperature in two dimensions. For large sizes, we show that the spin state in a central region is independent of the interactions far away, indicating a "single-state" picture, presumably the droplet model. Surprisingly, a single power law describes corrections to this result down to the smallest sizes studied.