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New Recursion Relations for Tree Amplitudes of Gluons

22 Pith papers cite this work, alongside 1,065 external citations. Polarity classification is still indexing.

22 Pith papers citing it
1,065 external citations · Pith
abstract

We present new recursion relations for tree amplitudes in gauge theory that give very compact formulas. Our relations give any tree amplitude as a sum over terms constructed from products of two amplitudes of fewer particles multiplied by a Feynman propagator. The two amplitudes in each term are physical, in the sense that all particles are on-shell and momentum conservation is preserved. This is striking, since it is just like adding certain factorization limits of the original amplitude to build up the full answer. As examples, we recompute all known tree-level amplitudes of up to seven gluons and show that our recursion relations naturally give their most compact forms. We give a new result for an eight-gluon amplitude, A(1+,2-,3+,4-,5+,6-,7+,8-). We show how to build any amplitude in terms of three-gluon amplitudes only.

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representative citing papers

String Theory from Maximal Supersymmetry

hep-th · 2026-01-16 · conditional · novelty 8.0

The open string Veneziano amplitude emerges as the unique tree-level completion of N=4 super Yang-Mills when supersymmetry, factorization, and positivity are imposed.

Quantum anomalies from three-point on-shell bootstrap

hep-th · 2026-06-26 · unverdicted · novelty 7.0

On-shell three-point bootstrap recovers Weyl, chiral, diffeomorphism and Lorentz anomalies up to constant prefactors and reproduces gauge-anomaly cancellation while excluding Pontryagin densities from the Weyl anomaly.

A Cosmological BCFW Bridge and Its Canonical Geometry

hep-th · 2026-06-23 · unverdicted · novelty 7.0

Introduces a bridge transformation on the orthogonal Grassmannian to produce an algebraic recursion for cosmological correlators and identifies the stripped four-gluon correlator as the canonical form of a rectangle in positive geometry.

Tree and $1$-loop fundamental BCJ relations from soft theorems

hep-th · 2023-05-08 · unverdicted · novelty 7.0

Derives the fundamental BCJ relation at tree level from soft theorems in bi-adjoint scalar theory, generalizes it to 1-loop integrands, and uses it to explain Adler zeros in other scalar theories.

A new recursion relation for tree-level NLSM amplitudes based on hidden zeros

hep-th · 2025-08-18 · unverdicted · novelty 6.0

A recursion for NLSM tree amplitudes based on hidden zeros reproduces the Adler zero, generates amplitudes from Tr(φ³) via δ-shift, expands them into bi-adjoint scalars, and claims these plus factorization uniquely determine all tree-level NLSM amplitudes.

On soft factors and transmutation operators

hep-th · 2024-06-07 · unverdicted · novelty 6.0

Reconstruction of known soft factors via transmutation operators and proof of nonexistence of higher-order universal soft factors for YM and GR amplitudes.

Perturbiner methods in scattering amplitude

hep-th · 2026-07-07 · accept · novelty 5.5

Perturbiner multi-particle solutions of classical field equations generate Berends–Giele currents and tree-level amplitudes across scalars, gauge theory, gravity, NLSM, AdS, and one-loop integrands, including several unpublished recursions.

BCFW like recursion for Deformed Associahedron

hep-th · 2025-07-19 · unverdicted · novelty 5.0

Adapts BCFW-style recursion to deformed ABHY-associahedron and D-type cluster polytopes for tree-level and one-loop amplitudes in multi-scalar cubic theories.

Note on tree NLSM amplitudes and soft theorems

hep-th · 2023-06-16 · unverdicted · novelty 5.0

The paper constructs general tree NLSM amplitudes via an expanded formula enforced by Adler zero universality and derives the corresponding double soft factors.

Tree level amplitudes from soft theorems

hep-th · 2022-12-25 · unverdicted · novelty 5.0

Tree-level amplitudes for Yang-Mills-scalar, pure Yang-Mills, Einstein-Yang-Mills and gravitational theories are reconstructed from soft theorems, universality of soft factors and double copy, with explicit soft factors determined.

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