The Holographic Dual of Strongly \gamma-deformed N=4 SYM Theory: Derivation, Generalization, Integrability and Discrete Reparametrization Symmetry

TL;DR

This paper extends the holographic dual of gamma-deformed N=4 SYM to general operators, revealing a new discrete symmetry, and uses integrability to solve the spectrum, aligning with Bethe Ansatz results.

Contribution

It generalizes the fishchain model to all operators with multiple scalars, uncovers a new discrete reparametrization symmetry, and develops a non-perturbative spectral solution.

Findings

Extended the dual model to general operators with multiple scalars.

Discovered a new discrete reparametrization symmetry of the world-sheet.

Achieved a full spectral solution consistent with Bethe Ansatz at weak coupling.

Abstract

Recently, we constructed the first-principle derivation of the holographic dual of N=4 SYM in the double-scaled $\gamma$-deformed limit directly from the CFT side. The dual fishchain model is a novel integrable chain of particles in AdS5. It can be viewed as a discretized string and revives earlier string-bit approaches. The original derivation was restricted to the operators built out of one of two types of scalar fields. In this paper, we extend our results to the general operators having any number of scalars of both types, except for a very special case when their numbers are equal. Interestingly, the extended model reveals a new discrete reparametrization symmetry of the "world-sheet", preserving all integrals of motion. We use integrability to formulate a closed system of equations, which allows us to solve for the spectrum of the model in full generality, and present non-perturbative numerical results. We show that our results are in agreement with the Asymptotic Bethe Ansatz of the fishnet model up to the wrapping order at weak coupling.