Born-Infeld-f (R) gravity with de Sitter solutions
International Journal of Geometric Methods in Modern Physics, cilt.20, sa.8, 2023 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 20 Sayı: 8
- Basım Tarihi: 2023
- Doi Numarası: 10.1142/s0219887823501414
- Dergi Adı: International Journal of Geometric Methods in Modern Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Metadex, zbMATH, Civil Engineering Abstracts
- Anahtar Kelimeler: de Sitter solution, modified theory of gravity, Palatini formulation
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Maltepe Üniversitesi Adresli: Evet
Özet
In this study, we consider Born-Infeld-f(R) gravity in which the f(R) term enters directly into the square root in the Palatini formulation. We briefly analyzed this model for an explicit f(R) function which includes positive and negative powers of the curvature scalar. We also show that both the ordinary Born-Infeld-f(R) and this modification reduce to the same gravitational action form under the conformal approach. Then, we consider the existence of a maximally symmetric vacuum solution for the gravitational field equations and find the de Sitter solution for this modified model.