Nonadditive entropy for random quantum spin- S chains

Nonadditive entropy for random quantum spin- S chains

We investigate the scaling of Tsallis entropy in disordered quantum spin- S chains. We show that an extensive scaling occurs for specific values of the entropic index. Those values depend only on the magnitude S of the spins, being directly related with the effective central charge associated with t...

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Veröffentlicht in:Physics letters. A 2010-07, Vol.374 (34), p.3384-3388
Hauptverfasser: Saguia, A., Sarandy, M.S.
Format: Artikel
Sprache:eng
Schlagworte:
Charge
Disordered system
Entropy
Nonextensive statistical mechanics
Quantum spin chain
Solid state physics
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Zusammenfassung:We investigate the scaling of Tsallis entropy in disordered quantum spin- S chains. We show that an extensive scaling occurs for specific values of the entropic index. Those values depend only on the magnitude S of the spins, being directly related with the effective central charge associated with the model.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2010.06.038