Meson spectrum and low-energy constants in large-$N$ QCD
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917305599918080 |
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| author | Bonanno, Claudio Pérez, Margarita García González-Arroyo, Antonio Ishikawa, Ken-Ichi Okawa, Masanori |
| author_facet | Bonanno, Claudio Pérez, Margarita García González-Arroyo, Antonio Ishikawa, Ken-Ichi Okawa, Masanori |
| contents | We present new non-perturbative results about the meson spectrum and the low-energy constants of QCD in the 't Hooft large-$N$ limit, $N\to\infty$ with $N_{\scriptscriptstyle{\rm f}}/N\to 0$. These are obtained from lattice Monte Carlo simulations of the Twisted Eguchi-Kawai (TEK) model up to $N=841$. More precisely, we will discuss: our findings for the meson mass spectrum; the determination of the radial Regge trajectories in the $π$ and $ρ$ channels; the computation of the coefficients of the $1/N$ expansion of the chiral condensate, of the pion decay constant, and of the next-to-leading-order coupling $\bar{\ell}_4$, up to $\mathcal{O}(1/N^3)$ from the combination of TEK and standard finite-$N$ results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_01583 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Meson spectrum and low-energy constants in large-$N$ QCD Bonanno, Claudio Pérez, Margarita García González-Arroyo, Antonio Ishikawa, Ken-Ichi Okawa, Masanori High Energy Physics - Lattice High Energy Physics - Phenomenology High Energy Physics - Theory We present new non-perturbative results about the meson spectrum and the low-energy constants of QCD in the 't Hooft large-$N$ limit, $N\to\infty$ with $N_{\scriptscriptstyle{\rm f}}/N\to 0$. These are obtained from lattice Monte Carlo simulations of the Twisted Eguchi-Kawai (TEK) model up to $N=841$. More precisely, we will discuss: our findings for the meson mass spectrum; the determination of the radial Regge trajectories in the $π$ and $ρ$ channels; the computation of the coefficients of the $1/N$ expansion of the chiral condensate, of the pion decay constant, and of the next-to-leading-order coupling $\bar{\ell}_4$, up to $\mathcal{O}(1/N^3)$ from the combination of TEK and standard finite-$N$ results. |
| title | Meson spectrum and low-energy constants in large-$N$ QCD |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2603.01583 |