Exploring wormholes in nonlinear f(R,ℒm) gravity with Dekel–Zhao dark matter profile
International Journal of Geometric Methods in Modern Physics, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1142/s0219887826502750
- Dergi Adı: International Journal of Geometric Methods in Modern Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, MathSciNet, zbMATH, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Technology Collection (ProQuest)
- Anahtar Kelimeler: dark matter, Dekel–Zhao, f(R,ℒm) gravity, modified gravity, Wormhole
- İnönü Üniversitesi Adresli: Evet
Özet
In this work, we investigate tidal-less wormhole geometries within the framework of f(R,ℒm) gravity, incorporating the effects of the Dekel–Zhao (DZ) dark matter halo, which follows a double power-law density profile. We consider a nonlinear gravitational model given by f(R,ℒm) = R/2 + ℒmβ, where β is a free parameter, and derive the corresponding modified field equations. Wormhole solutions are obtained by embedding the DZ dark matter distribution into the geometry. We analyze key physical characteristics including energy conditions, equation of state parameters, and equilibrium criteria, with a focus on the stability of the configuration via the Tolman–Oppenheimer–Volkoff (TOV) equation. Notably, the inner slope parameter a of the DZ profile significantly influences the throat radius and internal force balance. Our results indicate that the presence of DZ dark matter reduces the amount of exotic matter around the wormhole throat, as quantified by the Volume Integral Quantifier (VIQ), thereby enhancing the physical plausibility of the wormhole solutions within this modified gravity framework.