Entanglement of excited states in critical spin chains
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
02/10/2013
02/10/2013
2012
|
| Resumo |
Renyi and von Neumann entropies quantifying the amount of entanglement in ground states of critical spin chains are known to satisfy a universal law which is given by the conformal field theory (CFT) describing their scaling regime. This law can be generalized to excitations described by primary fields in CFT, as was done by Alcaraz et al in 2011 (see reference [1], of which this work is a completion). An alternative derivation is presented, together with numerical verifications of our results in different models belonging to the c = 1, 1/2 universality classes. Oscillations of the Renyi entropy in excited states are also discussed. Spanish projects [FIS2009-11654] Spanish projects QuiteMad QuiteMad Brazilian agency FAPESP Brazilian agency FAPESP Brazilian agency CNPq Brazilian agency CNPq |
| Identificador |
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, BRISTOL, v. 68, n. 1, pp. 78-88, JAN, 2012 1742-5468 http://www.producao.usp.br/handle/BDPI/33965 10.1088/1742-5468/2012/01/P01016 |
| Idioma(s) |
eng |
| Publicador |
IOP PUBLISHING LTD BRISTOL |
| Relação |
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT |
| Direitos |
restrictedAccess Copyright IOP PUBLISHING LTD |
| Palavras-Chave | #CONFORMAL FIELD THEORY #SOLVABLE LATTICE MODELS #ENTANGLEMENT IN EXTENDED QUANTUM SYSTEMS (THEORY) #GROUND-STATE #FIELD-THEORY #ENTROPY #AREA #MECHANICS #PHYSICS, MATHEMATICAL |
| Tipo |
article original article publishedVersion |
