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Exact scattering amplitudes in conformal fishnet theory

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arxiv 1812.06997 v1 pith:3CS7TVDZ submitted 2018-12-17 hep-th

classification hep-th
keywords amplitudefishnetfunctiontheorycomputeconformalcouplingdouble-trace
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We compute the leading-color contribution to four-particle scattering amplitude in four-dimensional conformal fishnet theory that arises as a special limit of $\gamma$-deformed $\mathcal N=4$ SYM. We show that the single-trace partial amplitude is protected from quantum corrections whereas the double-trace partial amplitude is a nontrivial infrared finite function of the ratio of Mandelstam invariants. Applying the Lehmann--Symanzik--Zimmerman reduction procedure to the known expression of a four-point correlation function in the fishnet theory, we derive a new representation for this function that is valid for arbitrary coupling. We use this representation to find the asymptotic behavior of the double-trace amplitude in the high-energy limit and to compute the corresponding exact Regge trajectories. We verify that at weak coupling the expressions obtained are in agreement with an explicit five-loop calculation.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Integrable systems: From the ice rule to supersymmetric fishnet Feynman diagrams

    hep-th 2025-09 conditional novelty 7.0 of 10

    A dissertation extends the integrability correspondence between lattice models and fishnet Feynman graphs to fermionic, supersymmetric, and boundary cases, yielding new exact critical couplings and a conjectured box p...

  2. Reggeization in Color

    hep-ph 2024-11 conditional novelty 7.0 of 10

    The authors derive closed rapidity evolution equations for triple-gluon exchange in the odderon, 10⊕10, 35⊕35, and 64 color channels, including new matrix equations that account for color-irrep multiplicity.

  3. Twistor fishnets

    hep-th 2019-08 conditional novelty 7.0 of 10

    Fishnet theory is recast on twistor space with an abelian gauge symmetry, yielding manifestly conformal cohomological amplitude formulae.

  4. Spontaneous Conformal Symmetry Breaking in Fishnet CFT

    hep-th 2019-08 conditional novelty 7.0 of 10

    The non-unitary fishnet CFT admits classical and quantum-protected flat vacua that spontaneously break conformal symmetry with exactly zero vacuum energy.

  5. On the Regge limit of Fishnet correlators

    hep-th 2019-08 conditional novelty 6.0 of 10

    The 0-magnon and 1-magnon Regge trajectories are exact functions of the fishnet coupling; 2-magnon trajectories are obtained perturbatively, with Mellin amplitudes evaluated at weak and strong coupling.

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