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BMS Supertranslation Symmetry Implies Faddeev-Kulish Amplitudes
- Source :
- Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-22 (2018), Journal of High Energy Physics
- Publication Year :
- 2017
- Publisher :
- arXiv, 2017.
-
Abstract
- We show explicitly that, among the scattering amplitudes constructed from eigenstates of the BMS supertranslation charge, the ones that conserve this charge, are equal to those constructed from Faddeev-Kulish states. Thus, Faddeev-Kulish states naturally arise as a consequence of the asymptotic symmetries of perturbative gravity and all charge conserving amplitudes are infrared finite. In the process we show an important feature of the Faddeev-Kulish clouds dressing the external hard particles: these clouds can be moved from the incoming states to the outgoing ones, and vice-versa, without changing the infrared finiteness properties of S matrix elements. We also apply our discussion to the problem of the decoherence of momentum configurations of hard particles due to soft boson effects.<br />Comment: 22 pages, 3 figures
- Subjects :
- High Energy Physics - Theory
Nuclear and High Energy Physics
Quantum decoherence
Spontaneous symmetry breaking
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
01 natural sciences
General Relativity and Quantum Cosmology
Quantum mechanics
0103 physical sciences
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
Scattering Amplitudes
010306 general physics
Gauge symmetry
S-matrix
Boson
Physics
010308 nuclear & particles physics
Charge (physics)
Spontaneous Symmetry Breaking
Symmetry (physics)
Scattering amplitude
Nonlinear Sciences::Exactly Solvable and Integrable Systems
High Energy Physics - Theory (hep-th)
Gauge Symmetry
lcsh:QC770-798
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-22 (2018), Journal of High Energy Physics
- Accession number :
- edsair.doi.dedup.....c0ca57f4c4a0cdcd5bbb40faa9e8a57d
- Full Text :
- https://doi.org/10.48550/arxiv.1712.04551