论文标题
软标量不会脱钩
Soft Scalars don't decouple
论文作者
论文摘要
证明可以找到一个含有无质量标量颗粒的田间理论，其具有与量子电动力学和扰动量子重力相似的红外结构，但根本没有显示量规的不变性或内部对称性，尤其没有明显的异构对称性。结果表明，与柔软的光子和重力不同，柔软的标量不会从衣服状态下脱离，并且当硬着色颗粒相互作用时，它们通常会产生。但是，硬质颗粒的纠缠量很小。
It is demonstrated that it is possible to find a field theory containing massless scalar particles which has infrared structure closely resembling that of quantum electrodynamics and perturbative quantum gravity but exhibiting no gauge invariance or internal symmetries at all, and in particular, no apparent asymptotic symmetry. It is shown that, unlike soft photons and gravitons, the soft scalars do not decouple from dressed states and they are generically produced when hard dressed particles interact. However, the entanglement of the hard and resulting soft particles is vanishingly small.
