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arXiv math-ph/0303036math-phmath.MP
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量子Heisenberg铁磁体置换群上无规行走的聚合物展开

A Polymer Expansion for the Random Walk on the Permutation Group Associated to the Quantum Heisenberg Ferromagnet

Paul Federbush

摘要:

很长一段时间以来,人们把晶格上的量子海森堡铁磁体与晶格顶点的置换群上的随机游动联系起来。在这里,我们提出了一个聚合物膨胀的热方程的解耦合到随机行走。我们在有限格上工作,不存在收敛问题。我们离开未来的工作,在必要的扩展到一个无限的晶格结果的边界条件。

英文摘要:

For a long time one has associated to the Quantum Heisenberg Ferromagnet on a lattice, a random walk on the permutation group of the lattice vertices. We here present a polymer expansion for the solution of the heat equation coupled to the random walk. We work on a finite lattice, there is no question of convergence. We leave to future work bounding terms in the expansion necessary to extend the result to an infinite lattice.

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