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arXiv 1009.4491math-phcond-mat.stat-mechmath.MPmath.PRquant-ph
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量子自旋系统的Ruelle-Lanford函数

Ruelle-Lanford functions for quantum spin systems

Yoshiko Ogata, Luc Rey-Bellet

摘要:

我们证明了量子(和经典)吉布斯态的宏观观测值的期望的大偏差原理。我们的证明是基于Ruelle-Lanford函数和直接次可加性参数,在经典的情况下,而不是依赖于Gärtner-Ellis定理,和集群扩展或转移运营商在量子的情况下。在这种方法中,我们恢复,扩大,并统一量子(和经典)大偏差结果的晶格吉布斯状态。在配套文件\cite{OR}中,我们讨论了表征率函数的相对熵。

英文摘要:

We prove a large deviation principle for the expectation of macroscopic observables in quantum (and classical) Gibbs states. Our proof is based on Ruelle-Lanford functions and direct subadditivity arguments, as in the classical case, instead of relying on Gärtner-Ellis theorem, and cluster expansion or transfer operators as done in the quantum case. In this approach we recover, expand, and unify quantum (and classical) large deviation results for lattice Gibbs states. In the companion paper \cite{OR} we discuss the characterization of rate functions in terms of relative entropies.

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