491 citations · 4.2k across the 70 of their papers we have counts for
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Entanglement entropy of excited states
Vincenzo Alba, Maurizio Fagotti, Pasquale Calabrese
We study the entanglement entropy of a block of contiguous spins in excited states of spin chains. We consider the XY model in a transverse field and the XXZ Heisenberg spin-chain.…
Entanglement entropy of two disjoint blocks in critical Ising models
Vincenzo Alba, Luca Tagliacozzo, Pasquale Calabrese
We study the scaling of the Renyi and entanglement entropy of two disjoint blocks of critical Ising models, as function of their sizes and separations. We present analytic results…
Quasi-long-range order in the 2D XY model with random phase shifts
Vincenzo Alba, Andrea Pelissetto, Ettore Vicari
We study the square-lattice XY model in the presence of random phase shifts. We consider two different disorder distributions with zero average shift and investigate the low-temper…