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  Double-soft behavior of massless closed strings interacting with any number of closed string tachyons

Marotta, R., & Mojaza, M. (2020). Double-soft behavior of massless closed strings interacting with any number of closed string tachyons. Journal of High Energy Physics, 2020(8): 83. doi:10.1007/JHEP08(2020)083.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-84C7-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-EFE2-E
Genre: Journal Article

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 Creators:
Marotta, Raffaele, Author
Mojaza, Matin1, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: High Energy Physics - Theory, hep-th
 Abstract: We calculate the simultaneous double-soft limit of two massless closed strings scattering with any number of closed string tachyons to the subleading order at the tree level. The limit factorizes the scattering amplitude into a double-soft factor multiplying the pure tachyon subamplitude, suggesting a universal double-soft theorem for the massless closed string. We confirm an existing result for the double-soft graviton in an on-shell equivalent, but different form, while also establishing the double-soft factorization behavior of the string dilaton and of the Kalb-Ramond state, as well as the mixed graviton-dilaton case. We also show that the simultaneous and consecutive double-soft theorems are consistent with each other. We furthermore provide a complete field theory diagrammatic view on our result, which enables us in particular to establish a four-point interaction vertex for two tachyons and two massless closed string states, as well as the missing in field theory of three-point interaction of two massless closed string state and one tachyon.

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 Dates: 2020-05-122020
 Publication Status: Published in print
 Pages: 36 pages, 6 figures, 2 appendices
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 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 2005.05877
URI: http://arxiv.org/abs/2005.05877
DOI: 10.1007/JHEP08(2020)083
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Title: Journal of High Energy Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2020 (8) Sequence Number: 83 Start / End Page: - Identifier: -