Narrow resonances in three-dimensional Ising Field Theory

Determine whether three-dimensional Ising Field Theory with magnetic deformation possesses very narrow resonances analogous to those observed in the two-dimensional theory.

Background

The paper identifies a weakly bound state and a two-particle scattering state in the three-dimensional magnetic deformation. It leaves unresolved whether the spectrum also contains narrow unstable resonances, as occurs in the two-dimensional Ising Field Theory setting discussed for comparison.

References

Does the model also possess very narrow resonances, as it did in 2d?

— 3d Ising Field Theory with Magnetic Deformation: Fuzzy Sphere Meets TCSA  (2609.10670 - Fardelli et al., 9 Sep 2026) in Section 6, “Future Directions”