- Abstract:
-
Physical systems have some degree of disorder present in them. We discuss how to treat natural, thermal entanglement in any random macroscopic system from which a thermodynamic witness bounded by a constant can be found. We propose that functional many-body perturbation theory be applied to allow either a quenched or an annealed average over the disorder to be taken. We find, when considering the example of an XX Heisenberg spin chain with a random coupling strength, that the region of natura...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/physrevlett.102.100503
-
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- Journal:
- Physical review letters
- Volume:
- 102
- Issue:
- 10
- Pages:
- 100503
- Publication date:
- 2009-03-05
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- URN:
-
uuid:1200f211-c657-4012-8e65-03b5125b64c5
- Source identifiers:
-
154207
- Local pid:
- pubs:154207
- Language:
- English
- Copyright date:
- 2009
Journal article
Enhancing the detection of natural thermal entanglement with disorder.
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