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arXiv quant-ph/0610157quant-phcond-mat.stat-mech
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经典自旋模型与量子稳定子形式

Classical spin models and the quantum stabilizer formalism

M. Van den Nest, W. Dür, H. J. Briegel

摘要:

我们涉及到一个大类的经典自旋模型,包括非均匀伊辛,波茨,和时钟模型的q-状态自旋任意图形,在量子物理学的问题。更准确地说,我们展示了如何将配分函数表示为某些量子稳定态和乘积态之间的内积。这种联系使我们能够使用量子信息理论中开发的强大技术,例如稳定剂形式主义和经典模拟技术,以统一的方式获得对这些模型的一般见解。我们恢复和推广几个对称性和高低温对偶,我们提供了一个有效的经典评价的配分函数的所有相互作用图有界树宽度。

英文摘要:

We relate a large class of classical spin models, including the inhomogeneous Ising, Potts, and clock models of q-state spins on arbitrary graphs, to problems in quantum physics. More precisely, we show how to express partition functions as inner products between certain quantum stabilizer states and product states. This connection allows us to use powerful techniques developed in quantum information theory, such as the stabilizer formalism and classical simulation techniques, to gain general insights into these models in a unified way. We recover and generalize several symmetries and high-low temperature dualities, and we provide an efficient classical evaluation of partition functions for all interaction graphs with a bounded tree-width.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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