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Robustness of a perturbed topological phase
S. Dusuel, M. Kamfor, R. Orus +2
We investigate the stability of the topological phase of the toric code model in the presence of a uniform magnetic field by means of variational and high-order series expansion ap…
Phase diagram of the SO(n) bilinear-biquadratic chain from many-body entanglement
Roman Orus, Tzu-Chieh Wei, Hong-Hao Tu
Here we investigate the phase diagram of the SO(n) bilinear-biquadratic quantum spin chain by studying the global quantum correlations of the ground state. We consider the cases of…
Implementing global Abelian symmetries in projected entangled-pair state algorithms
B. Bauer, P. Corboz, R. Orus +1
Due to the unfavorable scaling of tensor network methods with the refinement parameter M, new approaches are necessary to improve the efficiency of numerical simulations based on s…
Geometric entanglement of one-dimensional systems: bounds and scalings in the thermodynamic limit
Roman Orus, Tzu-Chieh Wei
In this paper the geometric entanglement (GE) of systems in one spatial dimension (1D) and in the thermodynamic limit is analyzed focusing on two aspects. First, we reexamine the c…