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Entanglement renormalization group flow of the Haah cubic code produces another fracton model with 4 qubits per lattice site, dubbed as the Haah B-code.
Local stabilizer codes in three dimensions without string logical operators
Jeongwan Haah · 2011
Earlier work this paper cites.
Bifurcation in entanglement renormalization group flow of a gapped spin model
Jeongwan Haah · 2014
Cited alongside, same era.
Haah codes on general three manifolds
Kevin T Tian, Eric Samperton, and Zhenghan Wang · 2018
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