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Quantum entanglement in states generated by bilocal group algebras
Alioscia Hamma, Radu Ionicioiu, Paolo Zanardi
Given a finite group G with a bilocal representation, we investigate the bipartite entanglement in the state constructed from the group algebra of G acting on a separable reference…
Bipartite entanglement and entropic boundary law in lattice spin systems
Alioscia Hamma, Radu Ionicioiu, Paolo Zanardi
We investigate bipartite entanglement in spin-1/2 systems on a generic lattice. For states that are an equal superposition of elements of a group of spin flips acting on the fu…
Ground state entanglement and geometric entropy in the Kitaev's model
A. Hamma, R. Ionicioiu, P. Zanardi
We study the entanglement properties of the ground state in Kitaev's model. This is a two-dimensional spin system with a torus topology and nontrivial four-body interactions betwee…