From conformal to volume law for the entanglement entropy in exponentially deformed critical spin 1/2 chains

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 Heisenberg models. In the XX case we characterize the crossover between the critical and the maximally entangled ground state...

Full description

Saved in:
Bibliographic Details
Published in:Journal of statistical mechanics 2014-10, Vol.2014 (10), p.P10004-15
Main Authors: Ramírez, Giovanni, Rodríguez-Laguna, Javier, Sierra, Germán
Format: Article
Language:English
Subjects:
Crossovers
Deformation
Entanglement
Entropy
Ground state
Law
Statistical mechanics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 Heisenberg models. In the XX case we characterize the crossover between the critical and the maximally entangled ground state in terms of the entanglement entropy and the entanglement spectrum.
ISSN:1742-5468
1742-5468
DOI:10.1088/1742-5468/2014/10/P10004