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cond-mat.str-el2016★ 50 cited
More on the rainbow chain: entanglement, space-time geometry and thermal states
Javier Rodríguez-Laguna, Jérôme Dubail, Giovanni Ramírez +2
The rainbow chain is an inhomogenous exactly solvable local spin model that, in its ground state, displays a half-chain entanglement entropy growing linearly with the system size.…
cond-mat.str-el2014★ 59 cited
From conformal to volume-law for the entanglement entropy in exponentially deformed critical spin 1/2 chains
Giovanni Ramírez, Javier Rodríguez-Laguna, Germán Sierra
An exponential deformation of 1D critical Hamiltonians gives rise to ground states whose entanglement entropy satisfies a volume-law. This effect is exemplified in the XX and Heise…