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arXiv 1909.08467hep-thmath-phmath.MP
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Sine-Gordon模型中的有限体积期望值

Finite volume expectation values in the sine-Gordon model

Arpad Hegedus

摘要:

利用在六顶点模型中发现的费米子基,我们导出了在哈密顿量的任何本征态中sine-Gordon理论的局部算符的期望值的精确公式。我们测试了我们的公式在纯多孤子部门的理论。在紫外线极限,我们检查我们的结果对刘维尔3点函数,而在红外线极限,我们评估我们的公式在半经典极限,并比较它们高达2粒子的贡献对半经典极限的先前已证实的LeClair-Mussardo型公式。在这两种情况下发现完全一致。

英文摘要:

Using the fermionic basis discovered in the 6-vertex model, we derive exact formulas for the expectation values of local operators of the sine-Gordon theory in any eigenstate of the Hamiltonian. We tested our formulas in the pure multi-soliton sector of the theory. In the ultraviolet limit, we checked our results against Liouville 3-point functions, while in the infrared limit, we evaluated our formulas in the semi-classical limit and compared them upto 2-particle contributions against the semi-classical limit of the previously conjectured LeClair-Mussardo type formula. Complete agreement was found in both cases.

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