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arXiv 1105.1850math-phmath.MP
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玻色子数算符分数幂次基态期望的一种概率表示

A Probabilistic Representation of the Ground State Expectation of Fractional Powers of the Boson Number Operator

Fumio Hiroshima, Jozsef Lorinczi, Toshimitsu Takaesu

摘要:

我们给出了一个公式的联合吉布斯测量布朗路径和随机时间泊松过程的基态期望的分数(实际上,任何实)的权力的纳尔逊模型中的玻色子数运营商。我们使用这种表示来获得紧的双边边界。作为应用,我们讨论了极化子和平移不变的Nelson模型。

英文摘要:

We give a formula in terms of a joint Gibbs measure on Brownian paths and the measure of a random-time Poisson process of the ground state expectations of fractional (in fact, any real) powers of the boson number operator in the Nelson model. We use this representation to obtain tight two-sided bounds. As applications, we discuss the polaron and translation invariant Nelson models.

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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