Bipartite Sachdev-Ye models with Read-Saleur symmetries
J. Classen-Howes,
P. Fendley,
A. Pandey
et al.
Abstract:We introduce an SU(M)-symmetric disordered bipartite spin model with unusual characteristics. Although superficially similar to the Sachdev-Ye (SY) model, it has several markedly different properties for M≥3. In particular, it has a large nontrivial nullspace whose dimension grows exponentially with system size. The states in this nullspace are frustration-free and are ground states when the interactions are ferromagnetic. The exponential growth of the nullspace leads to Hilbert-space fragmentation and a viola… Show more
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