Groupe de Physique Statistique

Equipe 106, Institut Jean Lamour

                     
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Séminaire de groupe

Entanglement over the rainbow
German Sierra
Institute of Theoretical Physics UAM-CSIC, Madrid
jeudi 01 octobre 2015 , 10h25
Salle de séminaire du groupe de Physique Statistique

The entanglement entropy of the ground states of local Hamiltonians are expected to satisfy an area law. However, in critical systems in 1 dimensions, or in systems with a Fermi surface, the are law is violated logarithmically. In this talk we shall present an inhomogenous Hamiltonian whose ground state has an entanglement entropy that follows a volumen law. In the limit of strong inhomogeneity the ground state is a valence bond state with the shape of a rainbow, while in the weak coupling limit the ground state it is a thermofield state whose temperature is proportional to the inhomogeneity parameter. The latter result suggests possible connections of this model with black hole paradoxes.



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