Radiative corrections to Kaluza-Klein masses
Radiative corrections to Kaluza-Klein masses
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DOI：
10.1103/physrevd.66.036005
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发表时间：
2002-04
影响因子：
5
通讯作者：
Hsin-Chia Cheng;K. Matchev;M. Schmaltz
中科院分区：
文献类型：
--
作者：
Hsin-Chia Cheng;K. Matchev;M. Schmaltz
超维度理论在每个卡鲁扎-克莱因能级上都包含许多近乎简并的状态。如果超维动量至少近似守恒，那么这种近简并态的现象学在很大程度上取决于 KK 模式之间的质量分裂。我们计算了一般 5 维和 6 维理论中对 KK 质量的完整单环辐射修正。我们将我们的公式应用于通用额外维度的例子，并表明辐射校正对于任何有意义的现象学研究都是至关重要的。我们的计算表明，尽管高维理论不可重整化，但具有包裹额外维度的循环的费曼图是明确定义的并且与截止无关。
Extra-dimensional theories contain a number of almost degenerate states at each Kaluza-Klein level. If extra dimensional momentum is at least approximately conserved then the phenomenology of such nearly degenerate states depends crucially on the mass splittings between KK modes. We calculate the complete one-loop radiative corrections to KK masses in general 5 and 6 dimensional theories. We apply our formulae to the example of universal extra dimensions and show that the radiative corrections are essential to any meaningful study of the phenomenology. Our calculations demonstrate that Feynman diagrams with loops wrapping the extra dimensions are well-defined and cut-off independent even though higher dimensional theories are not renormalizable.