forgot password?
register here
Research articles
  search articles
  reviews guidelines
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
Members: 1973
Articles: 1'802'609
Articles rated: 2555

20 November 2017
  » arxiv » quant-ph/0407056

  Article overview

Quantum Phase Transitions and Bipartite Entanglement
Lian-Ao Wu ; Marcelo S. Sarandy ; Daniel A. Lidar ;
Rating Members: 5/5 (1 reader) | Visitors: 5/5 (1 visitor)
Date 7 Jul 2004
Journal Phys. Rev. Lett. 93, 250404 (2004)
Subject Quantum Physics; Statistical Mechanics | quant-ph cond-mat.stat-mech
AffiliationCenter for Quantum Information and Quantum Control, University of Toronto
AbstractWe develop a general theory of the relation between quantum phase transitions (QPTs) characterized by nonanalyticities in the energy and bipartite entanglement. We derive a functional relation between the matrix elements of two-particle reduced density matrices and the eigenvalues of general two-body Hamiltonians of $d$-level systems. The ground state energy eigenvalue and its derivatives, whose non-analyticity characterizes a QPT, are directly tied to bipartite entanglement measures. We show that first-order QPTs are signalled by density matrix elements themselves and second-order QPTs by the first derivative of density matrix elements. Our general conclusions are illustrated via several quantum spin models.
Source arXiv, quant-ph/0407056
Other source [GID 794622] pmid15697878
Services Forum | Review | PDF | Favorites   
Visitor rating: did you like this article? no 1   2   3   4   5   yes

1 review found:
(To access fulltext of a review, click on titles below.)
1. review 08030051    * Rate this comment.
Review title: great paper
Reviewer: reviewer1161
Date: 04 March 2008 at 18:06 GMT.
Comment: this is a great paper that develop a general theory of the relation between quantum phase transitions (QPTs) characterize [...]

browser CCBot/2.0 (
» my Online CV
» Free

News, job offers and information for researchers and scientists:
myScience Austria
myScience Germany
myScience UK
myScience France
myScience Switzerland - International (over 7000 science jobs).
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2017 - Scimetrica