Report
Exploring the gravity sector of emergent higher-spin gravity: effective action and a solution
| العنوان: | Exploring the gravity sector of emergent higher-spin gravity: effective action and a solution |
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| المؤلفون: | Fredenhagen, Stefan, Steinacker, Harold C. |
| المصدر: | JHEP 05 (2021) 183 |
| سنة النشر: | 2021 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Theory, General Relativity and Quantum Cosmology |
| الوصف: | We elaborate the description of the semi-classical gravity sector of Yang-Mills matrix models on a covariant quantum FLRW background. The basic geometric structure is a frame, which arises from the Poisson structure on an underlying $S^2$ bundle over space-time. The equations of motion for the associated Weitzenb\"ock torsion obtained in arXiv:2002.02742 are rewritten in the form of Yang-Mills-type equations for the frame. An effective action is found which reproduces these equations of motion, which contains an Einstein-Hilbert term coupled to a dilaton, an axion and a Maxwell-type term for the dynamical frame. An explicit rotationally invariant solution is found, which describes a gravitational field coupled to the dilaton. Comment: 39 pages, v2: minor issues fixed, conclusion unchanged V3: Appendix E.1 corrected, no change of results or conclusions |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP05(2021)183 |
| URL الوصول: | http://arxiv.org/abs/2101.07297 |
| رقم الانضمام: | edsarx.2101.07297 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP05(2021)183 |
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