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arXiv 1002.2783hep-thcond-mat.stat-mech
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带边界的重可积QFT中的单点函数

One-point functions in massive integrable QFT with boundaries

M. Kormos, B. Pozsgay

摘要:

研究了1+1维有质量可积QFT中具有非平凡边界的带上的局部算子的期望值。使用有限体积正则化的交叉通道和扩展的边界状态形式主义的有限体积的情况下,我们给出了一个系列的扩展单点函数的理论的确切形状因子。截断级数与截断共形空间方法在尺度李杨模型中的数值结果进行了比较。我们讨论了我们的结果量子淬火问题的相关性。

英文摘要:

We consider the expectation value of a local operator on a strip with non-trivial boundaries in 1+1 dimensional massive integrable QFT. Using finite volume regularisation in the crossed channel and extending the boundary state formalism to the finite volume case we give a series expansion for the one-point function in terms of the exact form factors of the theory. The truncated series is compared with the numerical results of the truncated conformal space approach in the scaling Lee-Yang model. We discuss the relevance of our results to quantum quench problems.

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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