Holographic spectral functions of exotic spin-1 mesons
Abstract
We develop a general holographic framework for computing thermal spectral functions of exotic spin-1 mesons. A bulk Proca mass encodes the canonical ultraviolet dimension of the interpolating operator, allowing channels with different ultraviolet scaling to be treated within a unified membrane-flow formalism in the zero-spatial-momentum limit. We test this framework in a soft-wall model with a gluon-condensate background for the hybrid π1 and tetraquark-like Zc channels. The results show that dissociation temperatures of both channels lie below the phase transition temperatures. Increasing the gluon-condensate parameter c delays dissociation in both channels, but through different effects: both the vacuum-mass shift and thermal spectral deformation contribute in the π1 channel, whereas the latter dominates in the Zc channel. Nevertheless, for the same environment, the Zc resonance dissociates at a lower temperature than the π1 resonance.
Related
- Thermal spectral functions of heavy and exotic Mesons from a hQCD at finite density
- Holographic spin alignment of vector mesons in a spinning black-hole background
- Radial Excitation Spectra of Light Pseudoscalar and Vector Mesons in Light-Front Holographic QCD
- Electromagnetic form factors of vector mesons in Einstein-dilaton holographic QCD
- A dynamical Einstein-Proca-dilaton holographic model and exotic hybrid meson resonances
BibTeX
@misc{zhao2026holographic,
title = {{Holographic spectral functions of exotic spin-1 mesons}},
author = {Yan-Qing Zhao and Zhou-Run Zhu},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2607.17071},
eprint = {2607.17071},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.17071},
}
RIS
TY - UNPB
TI - Holographic spectral functions of exotic spin-1 mesons
AU - Yan-Qing Zhao
AU - Zhou-Run Zhu
PY - 2026
DA - 2026/10/28
PB - arXiv
DO - 10.48550/arxiv.2607.17071
UR - https://arxiv.org/abs/2607.17071
AB - We develop a general holographic framework for computing thermal spectral functions of exotic spin-1 mesons. A bulk Proca mass encodes the canonical ultraviolet dimension of the interpolating operator, allowing channels with different ultraviolet scaling to be treated within a unified membrane-flow formalism in the zero-spatial-momentum limit. We test this framework in a soft-wall model with a gluon-condensate background for the hybrid π_1 and tetraquark-like Z_c channels. The results show that dissociation temperatures of both channels lie below the phase transition temperatures. Increasing the gluon-condensate parameter c delays dissociation in both channels, but through different effects: both the vacuum-mass shift and thermal spectral deformation contribute in the π_1 channel, whereas the latter dominates in the Z_c channel. Nevertheless, for the same environment, the Z_c resonance dissociates at a lower temperature than the π_1 resonance.
ER -