Role of matter in gravitation: Going beyond the Einstein-Maxwell theory
| Autor: | Ryo Namba, A. Emir Gümrükçüoğlu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
High Energy Physics - Theory
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Geodesic Field (physics) gr-qc media_common.quotation_subject FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Gravitation Theoretical physics symbols.namesake 0103 physical sciences Tensor Gauge theory Einstein 010306 general physics media_common Physics Spacetime 010308 nuclear & particles physics hep-th Universe High Energy Physics - Theory (hep-th) astro-ph.CO symbols Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Physical Review D Physical Review Gumrukcuoglu, A E & Namba, R 2019, ' Role of matter in gravitation : going beyond the Einstein-Maxwell theory ', Physical Review D, vol. 100, no. 12, 124064 . https://doi.org/10.1103/PhysRevD.100.124064 |
| ISSN: | 2470-0010 |
| DOI: | 10.1103/physrevd.100.124064 |
| Popis: | For field theories in curved spacetime, defining how matter gravitates is part of the theory building process. In this letter, we adopt Bekenstein's multiple geometries approach to allow part of the matter sector to follow the geodesics on a general pseudo-Riemannian geometry, constructed from a tensor and a $U(1)$ gauge field. This procedure allows us to generate a previously unknown corner of vector-tensor theories. In the Jordan frame, apparent high-derivative terms of the vector field are reduced by integrating out an auxiliary variable, at the cost of introducing new matter interactions. As a simple example, we consider a conformal relation between different geometries and demonstrate the presence of an auxiliary degree. We conclude with a discussion of applications, in particular for the early universe. 5 pages; v2 update to match the published version |
| Databáze: | OpenAIRE |
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