arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1209.6034hep-thcond-mat.stat-mech
收藏

有限体积中的对角多孤子矩阵元

Diagonal multi-soliton matrix elements in finite volume

T. Pálmai, G. Takács

摘要:

我们考虑sine-Gordon模型中有限体积内多孤子态之间的局域算符的对角矩阵元,并提出了一个关于其有限尺寸依赖性的猜想,该猜想在体积指数修正下是有效的.这个猜想扩展了Pozsgay和Takács的结果,这些结果只对对角散射有效。为了验证这个猜想,我们实现了一个数值重整化群改进的截断共形空间方法。数值比较证实了这一猜想,该猜想对一般可积场论是有效的。该公式可用于计算有限温度单点和两点函数,使用最近开发的方法。

英文摘要:

We consider diagonal matrix elements of local operators between multi-soliton states in finite volume in the sine-Gordon model, and formulate a conjecture regarding their finite size dependence which is valid up to corrections exponential in the volume. This conjecture extends the results of Pozsgay and Takács which were only valid for diagonal scattering. In order to test the conjecture we implement a numerical renormalization group improved truncated conformal space approach. The numerical comparisons confirm the conjecture, which is expected to be valid for general integrable field theories. The conjectured formula can be used to evaluate finite temperature one-point and two-point functions using recently developed methods.

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。

↑