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arxiv: 0912.3718 · v2 · pith:P2IRES7Tnew · submitted 2009-12-18 · 🪐 quant-ph · cond-mat.stat-mech

Nonadditive entropy for random quantum spin-S chains

classification 🪐 quant-ph cond-mat.stat-mech
keywords chainsentropyquantumscalingspin-svaluesassociatedcentral
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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.

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