iPEPS calculations establish a complete phase diagram for the square-kagome Heisenberg antiferromagnet, identifying four distinct valence-bond crystal phases plus imperfect and perfect ferrimagnetic states.
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A discretized higher-rank gauge theory on a square lattice produces a classical Ising fracton spin liquid with preserved tensor Gauss law, but quantum perturbations induce severe Hilbert space fragmentation that blocks fractonic quantum dynamics.
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Quantum phase diagram of the spin-$\frac{1}{2}$ Heisenberg antiferromagnet on the square-kagome lattice: a tensor network study
iPEPS calculations establish a complete phase diagram for the square-kagome Heisenberg antiferromagnet, identifying four distinct valence-bond crystal phases plus imperfect and perfect ferrimagnetic states.
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Classical fracton spin liquid and Hilbert space fragmentation in a 2D spin-$1/2$ model
A discretized higher-rank gauge theory on a square lattice produces a classical Ising fracton spin liquid with preserved tensor Gauss law, but quantum perturbations induce severe Hilbert space fragmentation that blocks fractonic quantum dynamics.