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- Title
Open spin chains and complexity in the high energy limit.
- Authors
Chachamis, Grigorios; Sabio Vera, Agustín
- Abstract
In the high energy limit of scattering amplitudes in Quantum Chromodynamics and supersymmetric theories the dominant Feynman diagrams are characterized by a hidden integrability in the planar limit. A well-known example is that of Odderon exchange, which can be described as a composite state of three reggeized gluons and corresponds to a closed spin chain with periodic boundary conditions. In the N=4<inline-graphic></inline-graphic> supersymmetric Yang-Mills theory a similar spin chain arises in the multi-Regge asymptotics of the eight-point amplitude in the planar limit. We investigate the associated open spin chain in transverse momentum and rapidity variables solving the corresponding effective Feynman diagrams. We introduce the concept of complexity in the high energy effective field theory and study its emerging scaling laws.
- Subjects
QUANTUM chromodynamics; SUPERSYMMETRY; FEYNMAN diagrams; POMERONS; WAVE functions
- Publication
European Physical Journal C -- Particles & Fields, 2018, Vol 78, Issue 6, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-018-5977-8