Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1857760 | Annals of Physics | 2007 | 11 Pages |
Abstract
We propose that quantum phase transitions are generally accompanied by non-analyticities of the von Neumann (entanglement) entropy. In particular, the entropy is non-analytic at the Anderson transition, where it exhibits unusual fractal scaling. We also examine two dissipative quantum systems of considerable interest to the study of decoherence and find that non-analyticities occur if and only if the system undergoes a quantum phase transition.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Angela Kopp, Xun Jia, Sudip Chakravarty,