Sum rules for massive spin-2 Kaluza-Klein elastic scattering amplitudes

Sum rules for massive spin-2 Kaluza-Klein elastic scattering amplitudes
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大规模自旋 2 Kaluza-Klein 弹性散射振幅的求和规则

DOI:
10.1103/physrevd.100.115033
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发表时间:
2019
期刊:
影响因子:
5
通讯作者:
Simmons, Elizabeth H.
Simmons, Elizabeth H.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Chivukula, R. Sekhar;Foren, Dennis;Mohan, Kirtimaan A.;Sengupta, Dipan;Simmons, Elizabeth H.

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最近已经明确地表明,在紧化的五维重力中,大质量自旋-2 Kaluza-Klein态的纵向模式的高能散射振幅,将单纯地生长为类,只生长为类。由于对这些振幅的个别贡献确实以类似的方式增长,这些个别贡献之间所需的抵消是由这些状态的质量及其耦合之间的复杂关系造成的。在这里,我们报告了这些和规则关系的显式形式,这些和规则关系确保了Randall-Sundrum模型中自旋-2 Kaluza-Klein态弹性散射的必要抵消。我们考虑任意曲率的反德西特空间,包括曲率消失的环面紧化的特殊情况。和规则证明了对紧致额外维的消去是一般的,并且是由内空间本征模系统的Sturm-Liouville结构引起的。另外,和规则说明了外维度规的辐射模式的重要作用,它是与内部空间大小有关的动态模式。
It has recently been shown explicitly that the high-energy scattering amplitude of the longitudinal modes of massive spin-2 Kaluza-Klein states in compactified five-dimensional gravity, which would naively grow like, grow only like. Since the individual contributions to these amplitudes do grow like, the required cancellations between these individual contributions result from intricate relationships between the masses of these states and their couplings. Here we report the explicit form of these sum-rule relationships which ensure the necessary cancellations for elastic scattering of spin-2 Kaluza-Klein states in a Randall-Sundrum model. We consider an anti–de Sitter space of arbitrary curvature, including the special case of a toroidal compactification in which the curvature vanishes. The sum rules demonstrate that the cancellations atandare generic for a compact extra dimension and arise from the Sturm-Liouville structure of the eigenmode system in the internal space. Separately, the sum rules atandillustrate the essential role of the radion mode of the extradimensional metric, which is the dynamical mode related to the size of the internal space.
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