Soft theorems from anomalous symmetries

Huang, Yu-tin; Wen, Congkao

doi:10.1007/jhep12(2015)143

Cited by 34 publications

(39 citation statements)

References 82 publications

(199 reference statements)

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“…Generalizations to closed-string interactions in bosonic, heterotic and type-II theories directly follow from the KLT-relations. These universality results have greatly facilitated the construction of matrix elements for counterterms in half-maximal supergravity [30].…”

Section: Discussionmentioning

confidence: 98%

Universality in string interactions

Huang

Schlotterer

Wen

2016

J. High Energ. Phys.

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In this note, we provide evidence for universality in the low-energy expansion of tree-level string interactions. More precisely, in the α ′ -expansion of tree-level scattering amplitudes, we conjecture that the leading transcendental coefficient at each order in α ′ is universal for all perturbative string theories. We have checked this universality up to seven points and trace its origin to the ability to restructure the disk integrals of open bosonic string into those of the superstring. The accompanying kinematic functions have the same low-energy limit and do not introduce any transcendental numbers in their α ′ -corrections. Universality in the closed-string sector then follows from KLT-relations.

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Section: Discussionmentioning

confidence: 98%

Universality in string interactions

Huang

Schlotterer

Wen

2016

J. High Energ. Phys.

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“…explicitly given in [42] [87]. Depending on how conformal invariance is broken, two classes of theories emerge, both of which we can recover.…”

Section: Dilatonmentioning

confidence: 96%

Scattering Amplitudes from Soft Theorems and Infrared Behavior

Rodina

2019

Phys. Rev. Lett.

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We prove that soft theorems uniquely fix tree-level scattering amplitudes in a wide range of massless theories, including Yang-Mills, gravity, the non-linear sigma model, Dirac-Born-Infeld, dilaton effective theories, extended theories like NLSM⊕φ 3 , as well as some higher derivative corrections to these theories. We conjecture the same is true even when imposing more general soft behavior, simply by assuming the existence of soft operators, or by imposing gauge invariance/the Adler zero only up to a finite order in soft expansions. Besides reproducing known amplitudes, this analysis reveals a new higher order correction to the NLSM, and two interesting facts: the subleading theorem for the dilaton, and the subsubleading theorem for DBI follow automatically from the more leading theorems. These results provide motivation that asymptotic symmetries contain enough information to fully fix a holographic S-matrix. MOTIVATION

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“…In the heterotic theory, an interesting tree-level connection between single-trace interactions in the gauge-sector and the type I superstring was found in [37], again based on the single-valued projection of MZVs. In the gravitational sector of the heterotic string, half-maximal supersymmetry allows for additional D m R n interactions absent for the superstring whose implications for counterterms of N = 4 supergravity were studied in [38]. At a given mass dimension, the D m R n interactions accompanied by MZVs of highest transcendental weight are universal to the heterotic and type II theories [39], and this universality of the leading-transcendental part in fact carries over to the bosonic open and closed string.…”

Section: Tree-level Interactions Of Open and Closed Superstrings Invomentioning

confidence: 99%

From maximal to minimal supersymmetry in string loop amplitudes

Berg

Buchberger

Schlotterer

2017

J. High Energ. Phys.

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We calculate one-loop string amplitudes of open and closed strings with N = 1, 2, 4 supersymmetry in four and six dimensions, by compactification on Calabi-Yau and K3 orbifolds. In particular, we develop a method to combine contributions from all spin structures for arbitrary number of legs at minimal supersymmetry. Each amplitude is cast into a compact form by reorganizing the kinematic building blocks and casting the worldsheet integrals in a basis. Infrared regularization plays an important role to exhibit the expected factorization limits. We comment on implications for the one-loop string effective action.

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Soft theorems from anomalous symmetries

Cited by 34 publications

References 82 publications

Universality in string interactions

Universality in string interactions

Scattering Amplitudes from Soft Theorems and Infrared Behavior

From maximal to minimal supersymmetry in string loop amplitudes

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