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arXiv 1409.5769hep-lathep-phnucl-th
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零动量下提取形状因子方法的体积效应

Volume Effects on the Method of Extracting Form Factors at Zero Momentum

Brian C. Tiburzi

摘要:

Rome方法允许使用严格在零动量下执行的晶格计算来提取形状因子。我们研究了这种方法产生的有限体积效应的大小。作为一个测试的情况下,我们专注于π电荷半径,并显示如何确定有限体积效应的手征微扰理论的援助。开发的框架可以很容易地推广到占修改后的红外物理的其他低能量矩阵元素提取零动量。

英文摘要:

The Rome method allows one to extract form factors using lattice computations performed strictly at zero momentum. We investigate the size of finite volume effects resulting from this method. As a test case, we focus on the pion charge radius and show how to ascertain the finite volume effect with the aid of chiral perturbation theory. The framework developed can easily be generalized to account for modified infrared physics of other low-energy matrix elements extracted at zero momentum.

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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