Soft Scalars don't decouple
arXiv:2208.05023 · doi:10.1103/PhysRevD.106.105023
Abstract
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.
arXiv commentVersion to published in :hys. Rev. D
References in corpus (11)
- Soft Hair on Black Holes
- Shaving off Black Hole Soft Hair
- Can scalars have asymptotic symmetries?
- Construction of an asymptotic S matrix for perturbative quantum gravity
- Infrared quantum information
- Geometric Soft Theorems
- Asymptotic charges from soft scalars in even dimensions
- On the need for soft dressing
- Asymptotic structure of a massless scalar field and its dual two-form field at spatial infinity
- Dressed infrared quantum information
- Subleading soft dressings of asymptotic states in QED and perturbative quantum gravity