Causality bounds on scalar-tensor EFTs
Abstract We compute the causality/positivity bounds on the Wilson coefficients of scalar-tensor effective field theories. Two-sided bounds are obtained by extracting IR information from UV physics via dispersion relations of scattering amplitudes, making use of the full crossing symmetry. The gravit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-10-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP10(2023)135 |
| _version_ | 1797341358678081536 |
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| author | Dong-Yu Hong Zhuo-Hui Wang Shuang-Yong Zhou |
| author_facet | Dong-Yu Hong Zhuo-Hui Wang Shuang-Yong Zhou |
| author_sort | Dong-Yu Hong |
| collection | DOAJ |
| description | Abstract We compute the causality/positivity bounds on the Wilson coefficients of scalar-tensor effective field theories. Two-sided bounds are obtained by extracting IR information from UV physics via dispersion relations of scattering amplitudes, making use of the full crossing symmetry. The graviton t-channel pole is carefully treated in the numerical optimization, taking into account the constraints with fixed impact parameters. It is shown that the typical sizes of the Wilson coefficients can be estimated by simply inspecting the dispersion relations. We carve out sharp bounds on the leading coefficients, particularly, the scalar-Gauss-Bonnet couplings, and discuss how some bounds vary with the leading (∂ϕ)4 coefficient and as well as phenomenological implications of the causality bounds. |
| first_indexed | 2024-03-08T10:17:52Z |
| format | Article |
| id | doaj.art-9565aa57e37f406b98cc0e345e3e89f2 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-08T10:17:52Z |
| publishDate | 2023-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-9565aa57e37f406b98cc0e345e3e89f22024-01-28T12:18:22ZengSpringerOpenJournal of High Energy Physics1029-84792023-10-0120231017410.1007/JHEP10(2023)135Causality bounds on scalar-tensor EFTsDong-Yu Hong0Zhuo-Hui Wang1Shuang-Yong Zhou2Interdisciplinary Center for Theoretical Study, University of Science and Technology of ChinaInterdisciplinary Center for Theoretical Study, University of Science and Technology of ChinaInterdisciplinary Center for Theoretical Study, University of Science and Technology of ChinaAbstract We compute the causality/positivity bounds on the Wilson coefficients of scalar-tensor effective field theories. Two-sided bounds are obtained by extracting IR information from UV physics via dispersion relations of scattering amplitudes, making use of the full crossing symmetry. The graviton t-channel pole is carefully treated in the numerical optimization, taking into account the constraints with fixed impact parameters. It is shown that the typical sizes of the Wilson coefficients can be estimated by simply inspecting the dispersion relations. We carve out sharp bounds on the leading coefficients, particularly, the scalar-Gauss-Bonnet couplings, and discuss how some bounds vary with the leading (∂ϕ)4 coefficient and as well as phenomenological implications of the causality bounds.https://doi.org/10.1007/JHEP10(2023)135Classical Theories of GravityEffective Field Theories |
| spellingShingle | Dong-Yu Hong Zhuo-Hui Wang Shuang-Yong Zhou Causality bounds on scalar-tensor EFTs Journal of High Energy Physics Classical Theories of Gravity Effective Field Theories |
| title | Causality bounds on scalar-tensor EFTs |
| title_full | Causality bounds on scalar-tensor EFTs |
| title_fullStr | Causality bounds on scalar-tensor EFTs |
| title_full_unstemmed | Causality bounds on scalar-tensor EFTs |
| title_short | Causality bounds on scalar-tensor EFTs |
| title_sort | causality bounds on scalar tensor efts |
| topic | Classical Theories of Gravity Effective Field Theories |
| url | https://doi.org/10.1007/JHEP10(2023)135 |
| work_keys_str_mv | AT dongyuhong causalityboundsonscalartensorefts AT zhuohuiwang causalityboundsonscalartensorefts AT shuangyongzhou causalityboundsonscalartensorefts |