TCSA与有限体积边界态
TCSA and the finite volume boundary state
摘要：
我们发展了一种新的方法，在截断共形空间方法中计算边界态与有限体积体态的重叠。我们在热扰动伊辛模型中用解析方法检验了这种方法，而在标度Lee-Yang模型中用解析延拓方法得到的激发态g-函数与我们的结果进行了数值比较.我们也给出了一个简单的参数之间的渐近重叠的结构的有限体积边界状态和一个周期性的多粒子状态，其中包括比例的Gaudin型行列式。
英文摘要：
We develop a new way to calculate the overlap of a boundary state with a finite volume bulk state in the truncated conformal space approach. We check this method in the thermally perturbed Ising model analytically, while in the scaling Lee-Yang model numerically by comparing our results to excited state g-functions, which we obtained by the analytical continuation method. We also give a simple argument for the structure of the asymptotic overlap between the finite volume boundary state and a periodic multiparticle state, which includes the ratio of Gaudin type determinants.
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