Electromagnetic effect on scalar field collapse in higher curvature gravity

Banerjee, Narayan; Paul, Tanmoy

doi:10.1007/s10714-019-2574-6

Cited by 5 publications

(4 citation statements)

References 64 publications

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“…The plots presented in figures 16 and 17 show the impact of electric charge and field, respectively, for considered compact stars in the domain of our suggested gravitational models. Some very relevant and interesting effects of the electromagnetic field on the anisotropic collapse of compact stars have been investigated in [52].…”

Section: Effects Of Electric Field and Chargementioning

confidence: 99%

Effects of f(R, G) gravity on anisotropic charged compact objects

Ilyas,

Athar,

Khan

et al. 2023

Phys. Scr.

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The present study provides an in-depth analysis of the anisotropic matter distribution and various physical aspects of compact stars in the context of a $f(R,G)$-gravity framework. In order to gain an exhaustive understanding of these aspects, our study focuses on three particular compact stars: VELA X-1 (CS1), SAXJ1808.4-3658 (CS2), and 4U1820-30 (CS3). We conducted calculations on the relevant characteristics of these compact stars by employing three different models of $f(R,G)$-gravity. As a convenient approach, the $f(R,G)$-gravity is organized into two distinct components, which include $f_1(R)$ and $f_2(G)$. The $R$ dependent component is modeled similarly to the Hu-Sawicki approach, while for modeling the $G$ dependent component, we chose logarithmic and power law-like approaches and suggested three viable gravity models. Graphical methods are used to analyze the physical properties of the compact stars in the domain of suggested models of gravity.

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Section: Effects Of Electric Field and Chargementioning

confidence: 99%

Effects of f(R, G) gravity on anisotropic charged compact objects

Ilyas,

Athar,

Khan

et al. 2023

Phys. Scr.

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“…The differential equations here are made up of strictly geometric constraints imposed by the assumption that space and time may be represented by a Riemannian manifold as well as the representation of matter-gravitation interactions. Banerjee and Paul [1] investigated the effects of the electromagnetic field on scalar field collapse in higher curvature scenario. Their findings show that the presence of a time-dependent electromagnetic field necessitates anisotropy in the background spacetime geometry, and that such anisotropy allows the scalar field to collapse.…”

Section: Introductionmentioning

confidence: 99%

Consequences of electric charge on anisotropic hyperbolically symmetric static spacetime

2022

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The investigation of hyperbolically symmetric sources under the impact of electromagnetic field is conducted in this paper, with a focus on the fluid distributed in static spacetime. To do this, we choose the metric $f(R)$ gravity. It is observed that the fluid does not have the capacity to occupy the space surrounding the center, meaning that it exhibits cavity around the core. Furthermore, calculating the energy density indicates that it is invariably negative in the presence of correction terms, which might be crucial in comprehending certain quantum field occurrences, due to the fact that negative energies are directly tied with the quantum field theory. In this modified gravity, we implement the orthogonal splitting of the curvature tensor and derive the structure scalars. Following that, some cosmological models exhibiting the hyperbolical symmetry as well as their substantial determinants are investigated using two generating functions. The model of less-complex relativistic system of Einstein gravity is offered to explore precisely the role of $f(R)$ terms under the influence of electromagnetic field.

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“…The anisotropies in the CMB observations suggest that the universe is homogeneous but anisotropic [26]. For this reason, it is important to examine the cylindrically symmetric and plane-symmetric space-times within the framework of both GR and modified gravitational theories [27][28][29][30][31][32][33][34][35]. A recent comprehensive review has examined cylindrical systems in GR [36].…”

Section: Introductionmentioning

confidence: 99%

Cylindrically symmetric and plane-symmetric solutions in f(R) theory via Noether symmetries

Öz

Bamba

2022

Eur. Phys. J. C

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The f(R) theory is considered for static cylindrically symmetric and plane-symmetric spacetimes. In order to find solutions to the field equations of these models, the Noether symmetry method is used. First, we examine the GR case for cylindrically symmetrical space-time with the $$w=-1$$ w = - 1 dark energy state. Then, with the assumption of $$f(R) = f_0R^n$$ f ( R ) = f 0 R n , cases with matter and non-matter are examined and general solutions are determined for both space-times. Thus, it is shown that inclusive new solutions are obtained, considering the Noether symmetric conditions. In addition, the GR limit for each cases are examined.

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Electromagnetic effect on scalar field collapse in higher curvature gravity

Cited by 5 publications

References 64 publications

Effects of f(R, G) gravity on anisotropic charged compact objects

Effects of f(R, G) gravity on anisotropic charged compact objects

Consequences of electric charge on anisotropic hyperbolically symmetric static spacetime

Cylindrically symmetric and plane-symmetric solutions in f(R) theory via Noether symmetries

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