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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.01501 |
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| _version_ | 1866910926501838848 |
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| author | Bartsch, Christoph Kampf, Karol Novotný, Jiří Trnka, Jaroslav |
| author_facet | Bartsch, Christoph Kampf, Karol Novotný, Jiří Trnka, Jaroslav |
| contents | A new perspective on the inverse string theory Kawai-Lewellen-Tye (KLT) kernel is provided which establishes the universality of scattering amplitudes in the bi-adjoint scalar (BAS) theory, pions in the Non-linear sigma model (NLSM), and mixed amplitudes (NLSM+$ϕ^3$) recently studied in the literature. We show that all these amplitudes can be viewed as equivalent, arising from a single function, the inverse string theory KLT kernel, evaluated at different kinematic points. In this way cubic colored scalars and pions become interchangeable through a procedure we call the $α'$-shift. The latter complements the $δ$-shift proposed by Arkani-Hamed et al., and demonstrates an inherent equivalence of scattering amplitudes in different quantum field theories by embedding them in a common stringy framework. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_01501 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Universality of Colored Scalars from the Stringy KLT Kernel Bartsch, Christoph Kampf, Karol Novotný, Jiří Trnka, Jaroslav High Energy Physics - Theory A new perspective on the inverse string theory Kawai-Lewellen-Tye (KLT) kernel is provided which establishes the universality of scattering amplitudes in the bi-adjoint scalar (BAS) theory, pions in the Non-linear sigma model (NLSM), and mixed amplitudes (NLSM+$ϕ^3$) recently studied in the literature. We show that all these amplitudes can be viewed as equivalent, arising from a single function, the inverse string theory KLT kernel, evaluated at different kinematic points. In this way cubic colored scalars and pions become interchangeable through a procedure we call the $α'$-shift. The latter complements the $δ$-shift proposed by Arkani-Hamed et al., and demonstrates an inherent equivalence of scattering amplitudes in different quantum field theories by embedding them in a common stringy framework. |
| title | Universality of Colored Scalars from the Stringy KLT Kernel |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2505.01501 |