Fig. 2: \({\pmb{\mathbb{A}}}_{\mathbf{4}}\) symmetric phase.
From: Entanglement and the density matrix renormalization group in the generalized Landau paradigm
Top: entanglement spectra of the dual models in the middle of the ground state for 60 sites in the \({{\mathbb{A}}}_{4}\) symmetric phase of the original model (J1 = −2 and J2 = −5). The colour of a Schmidt value indicates the object that labels the corresponding gauge degree of freedom. Bottom: memory required to store a ground-state MPS tensor in the bulk at double precision for a given truncation error λmin. The ground state of the \({\mathsf{Rep}}({{\mathbb{A}}}_{4})\) model minimizes the entanglement and number of variational parameters for a fixed truncation error.
