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arXiv 2001.09164hep-thgr-qchep-ph
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在壳重粒子有效理论

On-shell heavy particle effective theories

Rafael Aoude, Kays Haddad, Andreas Helset

摘要:

我们引入壳层变量的重粒子有效理论(HPETs)的目标扩展重黑洞有效理论,以更高的自旋,并促进其应用到更高的后闵可夫斯基订单。这些变量继承了HPET场的无自旋和自旋包含效应的分离,从而导致任何自旋的三点振幅的显式自旋多极展开。通过将壳层上HPET变量表示的振幅与单粒子有效作用量表示的振幅相匹配,我们发现重自旋$s$粒子的自旋多极展开与克尔黑洞的多极展开(直到$2s$阶)完全对应,也就是说,不需要取无限自旋极限。最后,我们证明了从重自旋$s$粒子发射的具有相同螺旋度玻色子的树能级辐射过程具有自旋多极普适性。

英文摘要:

We introduce on-shell variables for Heavy Particle Effective Theories (HPETs) with the goal of extending Heavy Black Hole Effective Theory to higher spins and of facilitating its application to higher post-Minkowskian orders. These variables inherit the separation of spinless and spin-inclusive effects from the HPET fields, resulting in an explicit spin-multipole expansion of the three-point amplitude for any spin. By matching amplitudes expressed using the on-shell HPET variables to those derived from the one-particle effective action, we find that the spin-multipole expansion of a heavy spin-$s$ particle corresponds exactly to the multipole expansion (up to order $2s$) of a Kerr black hole, that is, without needing to take the infinite spin limit. Finally, we show that tree-level radiative processes with same-helicity bosons emitted from a heavy spin-$s$ particle exhibit a spin-multipole universality.

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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