Testing Higher Derivative Gravity Through Tunnelling
Testing Higher Derivative Gravity Through Tunnelling
复制标题
DOI：
10.3390/particles7010008
复制
发表时间：
2024-02
期刊：
影响因子：
1.4
通讯作者：
Ruth Gregory;Shi-Qian Hu
中科院分区：
文献类型：
--
作者：
Ruth Gregory;Shi-Qian Hu
从量子引力的角度来看，引力作用中的高导数项是自然的，但被认为会导致缺乏适定性。高斯-博内项有二阶运动方程，但不影响四维引力动力学，所以人们可能会认为它与物理无关。我们讨论了特征如何在隧穿过程中出现，以及这些特征是否可能在希格斯真空衰变中物理地接近。
Higher derivative terms in the gravitational action are natural from the perspective of quantum gravity, but are perceived as leading to a lack of well-posedness. The Gauss–Bonnet term has second-order equations of motion, but does not impact gravitational dynamics in 4D, so one might expect that it is not physically relevant. We discuss how signatures can show up in tunnelling processes and whether these will likely be physically accessible in Higgs vacuum decay.