|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
27 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Quantum discord in the ground state of spin chains | | Marcelo S. Sarandy
; Thiago R. de Oliveira
; Luigi Amico
; | | Date: |
23 Aug 2012 | | Abstract: | The ground state of a quantum spin chain is a natural playground for
investigating correlations. Nevertheless, not all correlations are genuinely of
quantum nature. Here we review the recent progress to quantify the
’quantumness’ of the correlations throughout the phase diagram of quantum spin
systems. Focusing to one spatial dimension, we discuss the behavior of quantum
discord close to quantum phase transitions. In contrast to the two-spin
entanglement, pairwise discord is effectively long-ranged in critical regimes.
Besides the features of quantum phase transitions, quantum discord is
especially feasible to explore the factorization phenomenon, giving rise to
nontrivial ground classical states in quantum systems. The effects of
spontaneous symmetry breaking are also discussed as well as the identification
of quantum critical points through correlation witnesses. | | Source: | arXiv, 1208.4817 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER