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High Energy Physics - Theory

arXiv:1805.11079 (hep-th)
[Submitted on 28 May 2018 (v1), last revised 24 Sep 2018 (this version, v8)]

Title:Universality of soft theorem from locality of soft vertex operators

Authors:Sho Higuchi, Hikaru Kawai
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Abstract:We show the universal soft behavior of massless particles at the tree level by considering the operator product expansion of the soft vertex operator with the hard vertex operators. We find that after eliminating total derivative terms the world-sheet integral for the soft vertex is determined only by the regions that are close to the hard verteces. This analyses can be applied to massless particles in various theories such as bosonic closed string, closed superstring and heterotic string. When the hard particle is massive we find that a mixing with different vertex operators occurs.
Comments: 34 pages, 3 figures
Subjects: High Energy Physics - Theory (hep-th)
Cite as: arXiv:1805.11079 [hep-th]
  (or arXiv:1805.11079v8 [hep-th] for this version)
  https://doi.org/10.48550/arXiv.1805.11079
Related DOI: https://doi.org/10.1016/j.nuclphysb.2018.09.024

Submission history

From: Sho Higuchi [view email]
[v1] Mon, 28 May 2018 17:47:15 UTC (180 KB)
[v2] Fri, 1 Jun 2018 05:51:46 UTC (147 KB)
[v3] Mon, 4 Jun 2018 14:23:36 UTC (153 KB)
[v4] Fri, 20 Jul 2018 12:47:30 UTC (154 KB)
[v5] Wed, 29 Aug 2018 07:20:45 UTC (160 KB)
[v6] Fri, 7 Sep 2018 00:55:30 UTC (160 KB)
[v7] Thu, 20 Sep 2018 09:36:11 UTC (160 KB)
[v8] Mon, 24 Sep 2018 05:17:11 UTC (160 KB)
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