论文标题
2-2散射中的贝尔不平等
Bell inequalities in 2-2 scattering
论文作者
论文摘要
我们考虑了光子，重力，费米子和硫化的2-2散射中的贝尔不平等。我们选择对最大纠缠状态的最大违反铃铛的测量设置，并计算这些过程的相关铃铛不平等。对于低能量下的光子散射，除了小横向区域外，QED均显示出所有散射角的铃铛违规。这导致了一个微调问题。结合光轴/轴突样粒子（ALP）消除了微调问题并约束轴耦合 - 轴 - 质量参数。允许在光子散射中进行重力交换和要求违反铃铛，我们发现重力猜想得到了满足。讨论了量子重力对轴突耦合的影响。对于2-2个重力散射，我们发现cemz的边界最多可以违反小铃铛。通过要求Bhabha散射中的贝尔违反，可以发现对温伯格角的限制。我们使用最新的S-Matrix引导数据进行培来和光子来研究允许的S-膜空间中的铃铛参数。在光子情况下，我们研究了铃铛参数是能量的函数，并为EFT观测结果提供了支持。我们讨论pion s-matrices的铃铛参数，即Qutrits。对于PIONS，我们发现适合表现出Regge行为的S-膜的合适的铃铛参数最小化。
We consider Bell inequalities in 2-2 scattering of photons, gravitons, fermions and pions. We choose measurement settings that give maximum Bell violation for maximally entangled states and calculate the relevant Bell inequalities for these processes. For photon scattering at low energies, QED exhibits Bell violation for all scattering angles except for a small transverse region. This leads to a fine-tuning problem. Incorporating a light axion/axion-like particle (ALP) removes the fine-tuning problem and constrains the axion-coupling--axion-mass parameters. Allowing for graviton exchange and demanding Bell violation in photon scattering, we find that the Weak Gravity Conjecture is satisfied. Quantum gravity effect on axion coupling is discussed. For 2-2 graviton scattering, we find that CEMZ bounds allow for at most small Bell violations. Restriction on the Weinberg angle is found by demanding Bell violation in Bhabha scattering. We use recent S-matrix bootstrap data for pions and photons to study the Bell parameter in the space of allowed S-matrices. In the photon case, we study the Bell parameters as a function of energy and find support for the EFT observations. We discuss Bell parameter for pion S-matrices, which are qutrits. For pions, we find that there is a minimization of a suitable Bell parameter for S-matrices which exhibit Regge behaviour.
