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arXiv 0804.0140hep-phhep-lathep-th
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格点电弱理论中截断的上界

Upper bound on the cutoff in lattice Electroweak theory

A. I. Veselov, M. A. Zubkov

摘要:

我们数值研究了无费米子的格点Weinberg-Salam模型的精细结构常数和Weinberg角的实际值。我们还分析了以前的数值研究的晶格电弱理论的数据。我们已经发现,当晶格间距$a$减小时,沿着恒定物理学的路线移动,我们应该将理论的物理希格斯相保持在$a$的某个值。我们对晶格间距的最小值的估计是$a_c = [430\pm 40 {\rm Gev}]^{-1}$。

英文摘要:

We investigate numerically lattice Weinberg - Salam model without fermions for realistic values of the fine structure constant and the Weinberg angle. We also analyze the data of the previous numerical investigations of lattice Electroweak theory. We have found that moving along the line of constant physics when the lattice spacing $a$ is decreased, one should leave the physical Higgs phase of the theory at a certain value of $a$. Our estimate of the minimal value of the lattice spacing is $a_c = [430\pm 40 {\rm Gev}]^{-1}$.

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