303 citations · 4.6k across the 110 of their papers we have counts for
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String and Membrane condensation on 3D lattices
Alioscia Hamma, Paolo Zanardi, Xiao Gang Wen
In this paper, we investigate the general properties of lattice spin models that have string and/or membrane condensed ground states. We discuss the properties needed to define a s…
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…