Self-gravitating systems in Extended Gravity
| Autor: | Salvatore Capozziello, Arturo Stabile |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
General relativity
lcsh:Astronomy Scalar (mathematics) Dark matter Alternative Theories of Gravity FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Curvature General Relativity and Quantum Cosmology Gravitation lcsh:QB1-991 Theoretical physics weak field limit Jordan and Einstein frames Ricci curvature spherical symmetry Solar and Stellar Astrophysics (astro-ph.SR) Mathematical Physics Physics self-gravitating systems Astronomy and Astrophysics Mathematical Physics (math-ph) Astrophysics - Astrophysics of Galaxies Gravitational lens Astrophysics - Solar and Stellar Astrophysics Astrophysics of Galaxies (astro-ph.GA) conformal transformations |
| Zdroj: | Galaxies, Vol 2, Iss 4, Pp 520-576 (2014) |
| Popis: | Starting from the weak field limit, we discuss astrophysical applications of Extended Theories of Gravity where higher order curvature invariants and scalar fields are considered by generalizing the Hilbert-Einstein action linear in the Ricci curvature scalar $R$. Results are compared to General Relativity in the hypothesis that Dark Matter contributions to the dynamics can be neglected thanks to modified gravity. In particular, we consider stellar hydrostatic equilibrium, galactic rotation curves, and gravitational lensing. Finally, we discuss the weak field limit in the Jordan and Einstein frames pointing out how effective quantities, as gravitational potentials, transform from one frame to the other and the interpretation of results can completely change accordingly. Review paper; 59 pages, 15 figures |
| Databáze: | OpenAIRE |
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