When must a local Hamiltonian be frustration free? - Or Sattath; Siddhardh C. Morampudi; Christopher R. Laumann; Roderich Moessner (CoRR, 2015)

Clustering in Hilbert space of a quantum optimization problem. - Siddhardh C. Morampudi; B. Hsu; S. L. Sondhi; Roderich Moessner; Christopher R. Laumann (CoRR, 2017)