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QCD Worldsheet Axion from the Bootstrap

Adwait Gaikwad, Victor Gorbenko, Andrea L. Guerrieri

31/10/23 Published in : arXiv:2310.20698

The worldsheet axion plays a crucial role in the dynamics of the Yang-Mills confining flux tubes. According to the lattice measurements, its mass is of order the string tension and its coupling is close to a certain critical value. Using the S-matrix Bootstrap, we construct non-perturbative 2 \to 2 branon scattering amplitudes which also feature a weakly coupled axion resonance with these properties. We study the extremal bootstrap amplitudes in detail and show that the axion plays a dominant role in their UV completion in two distinct regimes, in one of which it cannot be considered a parametrically light particle. We conjecture that the actual flux tube amplitudes exhibit a similar behavior.

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Phase I & II research project(s)

  • String Theory
  • Quantum Systems
  • Field Theory
  • Statistical Mechanics
  • Geometry, Topology and Physics

Phase III direction(s)

  • Holography and bulk-boundary correspondence

Harmonic analysis of Gaussian multiplicative chaos on the circle

Gromov-Witten/Hilbert versus AdS3/CFT2 Correspondence

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The National Centres of Competence in Research (NCCRs) are a funding scheme of the Swiss National Science Foundation

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