toric stability refs

codes/quantum/qubits/stabilizer/topological/surface/2d_surface/toric/toric.yml

@@ -37,6 +37,8 @@ description: |
 protection: |
   Toric code on an \(L\times L\) torus is a \([[2L^2,2,L]]\) CSS code.
 
+  Behavior under Hamiltonian \(X\)-type and \(Z\)-type perturbations is related to an anisotropic 3D gauge Higgs model \cite{arxiv:0804.3175,arxiv:1411.5815}.
+
   Coherent physical errors are expected to become incoherent logical errors under syndrome measurement; see corroborating numerical studies performed via the Majorana mapping \cite{arxiv:1710.02270} as well as analytical bounds \cite{arxiv:1912.04319}.
 
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