Multipositivity Constrains the Chiral Lagrangian
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914584700387328 |
|---|---|
| author | Cheung, Clifford Jeong, Jaehoon Ko, Pyungwon Pomarol, Alex Remmen, Grant N. Sciotti, Francesco |
| author_facet | Cheung, Clifford Jeong, Jaehoon Ko, Pyungwon Pomarol, Alex Remmen, Grant N. Sciotti, Francesco |
| contents | The chiral Lagrangian is a cornerstone of modern particle physics, offering a systematic and quantitative description of low-energy pions. Using tools from the modern scattering amplitudes program, we show that consistent multiparticle dynamics impose novel constraints on the coupling constants of this theory. In the planar limit, these constraints imply that certain Wilson coefficients of the chiral Lagrangian are bounded from below by the chiral anomaly. Our results reveal a subtle connection between the anomalous and nonanomalous sectors of the underlying strong interactions, while introducing a novel formulation of multipositivity bounds that holds for any planar tree-level theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_21582 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Multipositivity Constrains the Chiral Lagrangian Cheung, Clifford Jeong, Jaehoon Ko, Pyungwon Pomarol, Alex Remmen, Grant N. Sciotti, Francesco High Energy Physics - Theory High Energy Physics - Phenomenology The chiral Lagrangian is a cornerstone of modern particle physics, offering a systematic and quantitative description of low-energy pions. Using tools from the modern scattering amplitudes program, we show that consistent multiparticle dynamics impose novel constraints on the coupling constants of this theory. In the planar limit, these constraints imply that certain Wilson coefficients of the chiral Lagrangian are bounded from below by the chiral anomaly. Our results reveal a subtle connection between the anomalous and nonanomalous sectors of the underlying strong interactions, while introducing a novel formulation of multipositivity bounds that holds for any planar tree-level theory. |
| title | Multipositivity Constrains the Chiral Lagrangian |
| topic | High Energy Physics - Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2605.21582 |