Note on soft graviton theorem by KLT relation

Du, Yi-Jian; Feng, Bo; Fu, Chih-Hao; Wang, Yihong

doi:10.1007/jhep11(2014)090

Cited by 28 publications

(32 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the context of the soft limit, it was found in [24,25] that the infrared behavior of both gauge theories and gravity is consistent with an underlying double copy provided by color-kinematics duality to all orders in perturbation theory. In this paper we have studied the double copy structure in the context of the soft gluon and graviton theorems.…”

Section: Discussionmentioning

confidence: 93%

The double copy structure of soft gravitons

Vera

Vázquez-Mozo

2015

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:The subleading corrections to factorization theorems for soft bremsstrahlung in nonabelian gauge theories and gravity are investigated in the case of a five point amplitude with four scalars. Building on recent results, we write the action of the angular momentum operators on scattering amplitudes as derivatives with respect to the Mandelstam invariants to uncover a double copy structure in the contribution of the soft graviton to the amplitude, both in the leading term and the first correction. Using our approach, we study Gribov's theorem as extended to nonabelian gauge theories and gravity by Lipatov, and find that subleading corrections can be obtained from those to Low's theorem by dropping the terms with derivatives with respect to the center-of-mass energy, which are suppressed at high energies. In this case, the emitted gravitons are not necessarily soft.

show abstract

Section: Discussionmentioning

confidence: 93%

The double copy structure of soft gravitons

Vera

Vázquez-Mozo

2015

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…This relation was presented in [73][74][75] and derived in [19,76] by KLT realtion [72,77,78]. The sub-leading soft graviton operator can be expressed as…”

Section: Gravity Soft Operators As Double Copy Of Yang-mills Soft Opementioning

confidence: 92%

“…Taking the helicity of the soft gluon h s = +1 as a convention, the soft operators may be written as 19) with λ x , λ y arbitrary choosen reference spinors and the freedom in this choice is equivalent to the gauge freedom.…”

Section: Soft Gluon Theorem In Yang-mills Theorymentioning

confidence: 99%

“…Various different methods were used to derive the soft theorems, including Feynman diagram approach [8] and conformal symmetry approach [16] for Yang-Mills, the Poincaré symmetry and gauge symmetry approach [6,7], ambitwistor string approach [15] for Yang-Mills and gravity. The new soft graviton theorem was also obtained from the soft gluon theorem via the Kawai-Lewellen-Tye (KLT) relations [19]. The scattering equations [42][43][44][45], or Cachazo-He-Yuan (CHY) formulae, were used to study the soft theorems in arbitrary number of dimensions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soft theorems in maximally supersymmetric theories

Liu

2015

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

“…More recently, the double-soft theorems for scalars and fermions have been extended to include the double-soft limits of gluons and gravitons [24,25]. Further studies on the soft limit of the S matrix in gauge theories, gravity and string theory can be found in [36][37][38][39][40][41][42][43][44][45][46]. In almost all the studies mentioned above the soft theorems were established through the BCFW recursion relations [47,48] in 4 dimensions or through the CHY formula in the case of arbitrary dimensions [49].…”

Section: Jhep08(2015)128mentioning

confidence: 99%

Multi-soft theorems in gauge theory from MHV diagrams

Georgiou

2015

J. High Energ. Phys.

View full text Add to dashboard Cite

In this work we employ the MHV technique to show that scattering amplitudes with any number of consecutive soft particles behave universally in the multi-soft limit in which all particles go soft simultaneously. After identifying the diagrams which give the leading contribution we give the general rules for writing down compact expressions for the multi-soft factor of m gluons, k of which have negative helicity. We explicitly consider the cases where k = 1 and 2. In N = 4 SYM, the multi-soft factors of 2 scalars or 2 fermions forming a singlet of SU(4) R-symmetry, and m − 2 positive helicity gluons are derived. The special case of the double-soft limit gives an amplitude whose leading divergence is 1/δ 2 and not 1/δ as in the case of 2 scalars or 2 fermions that do not form a singlet under SU(4). The construction based on the analytic supervertices allows us to obtain simple expressions for the triple-soft limit of 1 scalar and 2 positive helicity fermions, as well as for the quadrapole-soft limit of 4 positive helicity fermions, in a singlet configuration.

show abstract

Note on soft graviton theorem by KLT relation

Cited by 28 publications

References 69 publications

The double copy structure of soft gravitons

The double copy structure of soft gravitons

Soft theorems in maximally supersymmetric theories

Multi-soft theorems in gauge theory from MHV diagrams

Contact Info

Product

Resources

About