نتایج جستجو برای: modified f

تعداد نتایج: 548498  

Journal: :International Journal of Geometric Methods in Modern Physics 2022

The main emphasis of this paper is to find the viable solutions Einstein Maxwell fields equations compact star in context modified $f(R)$ theory gravity. Two different models gravity are considered. In particular, we choose isotropic matter distribution and Bardeen's model for boundary conditions as an exterior space-time geometry. We use conformal Killing geometry compute metric potentials. di...

Journal: :Chemical Physics Letters 2022

F modification of titanium dioxide through a plasma method was achieved for the first time. The accomplished by Ar/HF dielectric barrier discharge, including introduction Ti-F bonds, interstitial doping, and substitution doping. characterization results showed that band gap Ar/HF/DBD-TiO2 reduced to 2.78 eV, fluorescence intensity greatly reduced, electron-hole recombination rate reduced. degra...

Journal: :International Journal of Modern Physics D 2022

In this work, we study the inflationary cosmology in modified gravity theory [Formula: see text] ([Formula: is parameter) with three distinct classes of inflation potentials (i) text], (ii) and (iii) where are potential parameters. We have derived Einstein equation, slow-roll parameters, scalar spectral index tensor-to-scalar ratio r tensor theory. obtain range using constraints parameter space...

Journal: :European Physical Journal C 2023

Abstract The objective of this manuscript is to investigate the traversable wormhole solutions in background $$f(R, \phi )$$ f ( R , ϕ ) theory gravity, where R Ricci scalar and $$\phi $$ potential resp...

Journal: :Analysis and Mathematical Physics 2023

For a function f starlike of order $$\alpha $$ , $$0\leqslant \alpha <1$$ non-constant polynomial Q degree n which is non-vanishing in the unit disc $${\mathbb {D}}$$ and $$\beta >0$$ we consider $$F:{\mathbb {D}}\rightarrow {\mathbb {C}}$$ defined by $$F(z)=f(z) (Q(z))^{\beta /n}$$ find largest value $$r\in (0,1]$$ such that $$r^{-1} F(rz)$$ lies various known subclasses functions as class $$\...

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