Asymptotic symmetries and subleading soft photon theorem in effective field theories

Laddha, Alok; Mitra, Prahar

doi:10.1007/JHEP05(2018)132

Title: Asymptotic symmetries and subleading soft photon theorem in effective field theories

Journal Article · Tue May 22 00:00:00 EDT 2018 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP05(2018)132· OSTI ID:1598223

Laddha, Alok ^[1];

^[2]

Chennai Mathematical Inst. (India)
Inst. for Advanced Study, Princeton, NJ (United States). School of Natural Sciences

In [1, 2] it was shown that the subleading soft photon theorem in tree level amplitudes in massless QED is equivalent to a new class of symmetries of the theory parameterized by a vector field on the celestial sphere. In this paper, we extend these results to the subleading soft photon theorem in any Effective Field Theory containing photons and an arbitrary spectrum of massless particles. We show that the charges associated to the above class of symmetries are sensitive to certain three point functions of the theory and are corrected by irrelevant operators of specific dimensions. Our analysis shows that the subleading soft photon theorem in any tree level scattering amplitude is a statement about asymptotic symmetries of the S-matrix.

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Research Organization:: Institute for Advanced Study, Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0009988

OSTI ID:: 1598223

Journal Information:: Journal of High Energy Physics (Online), Vol. 2018, Issue 5; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 31 works

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Soft Bootstrap and Supersymmetry Elvang, Henriette; Hadjiantonis, Marios; Jones, Callum R. T. arXiv https://doi.org/10.48550/arxiv.1806.06079	text	January 2018
Subleading Soft Theorem for arbitrary number of external soft photons and gravitons Bhatkar, Sayali Atul; Sahoo, Biswajit arXiv https://doi.org/10.48550/arxiv.1809.01675	preprint	January 2018
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