دورية أكاديمية
FeynMG:a FeynRules extension for scalar-tensor theories of gravity
| العنوان: | FeynMG:a FeynRules extension for scalar-tensor theories of gravity |
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| المؤلفون: | Muñoz, Sergio Sevillano, Copeland, Edmund J., Millington, Peter, Spannowsky, Michael |
| المصدر: | Muñoz , S S , Copeland , E J , Millington , P & Spannowsky , M 2024 , ' FeynMG : a FeynRules extension for scalar-tensor theories of gravity ' , Computer Physics Communications , vol. 296 , 109035 . https://doi.org/10.1016/j.cpc.2023.109035Test |
| سنة النشر: | 2024 |
| المجموعة: | The University of Manchester: Research Explorer - Publications |
| مصطلحات موضوعية: | Feynman rules, Symbolic algebra, Scalar-tensor theories, High energy physics, FeynRules |
| الوصف: | The ability to represent perturbative expansions of interacting quantum field theories in terms of simple diagrammatic rules has revolutionized calculations in particle physics (and elsewhere). Moreover, these rules are readily automated, a process that has catalyzed the rise of symbolic algebra packages. However, in the case of extended theories of gravity, such as scalar-tensor theories, it is necessary to precondition the Lagrangian to apply this automation or, at the very least, to take advantage of existing software pipelines. We present a Mathematica code FeynMG, which works in conjunction with the well-known package FeynRules, to do just that: FeynMG takes as inputs the FeynRules model file for a non-gravitational theory and a user-supplied gravitational Lagrangian. FeynMG provides functionality that inserts the minimal gravitational couplings of the degrees of freedom specified in the model file, determines the couplings of the additional tensor and scalar degrees of freedom (the metric and the scalar field from the gravitational sector), and preconditions the resulting Lagrangian so that it can be passed to FeynRules, either directly or by outputting an updated FeynRules model file. The Feynman rules can then be determined and output through FeynRules, using existing universal output formats and interfaces to other analysis packages. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://research.manchester.ac.uk/en/publications/67480b2e-0727-4d52-9284-c6a4c5de64dcTest |
| DOI: | 10.1016/j.cpc.2023.109035 |
| الإتاحة: | https://doi.org/10.1016/j.cpc.2023.109035Test https://research.manchester.ac.uk/en/publications/67480b2e-0727-4d52-9284-c6a4c5de64dcTest https://pure.manchester.ac.uk/ws/files/289082772/2211.14300v1.pdfTest https://pure.manchester.ac.uk/ws/files/289082775/1-s2.0-S0010465523003806-main.pdfTest |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.C5F3A3F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.cpc.2023.109035 |
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