Spherically symmetric solutions in Ü ber-gravity

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KHOSRAVI N.

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Journal Paper

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Journal: Iranian Journal of Physics Research Year:2019 | Volume:19 | Issue:3 Page(s): 565-570

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Title

Spherically symmetric solutions in Ü ber-gravity

Author(s)

KHOSRAVI N. | Issue Writer Certificate

Keywords

modified gravityQ1

spherical solutionsQ1

Abstract

In this paper, we introduce ubergravity based on the idea of the ensemble average theory of f (R) gravity models. This model has interesting properties including its universality. Another property of this model is its curvature dependency: In high curvatures, ubergravity is reduced to standard Einstein-Hilbert action, while in low curvatures, it vanishes. This transition happens at a scale of R0. It is possible to show that this dimensionful scale plays the role of the cosmological constant at late times. To consider the behavior of the non-linear structure formation, we need to start with the spherical collapse; hence, here we study the spherically symmetric solutions. We show that the radius dependency of these solutions is totally different from the Schwarzchild solution. Interestingly, the solutions looks like the Reissner-Nordstrom in the absence of any electrical charge.

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APA: Copy

KHOSRAVI, N.. (2019). Spherically symmetric solutions in Ü ber-gravity. IRANIAN JOURNAL OF PHYSICS RESEARCH, 19(3 ), 565-570. SID. https://sid.ir/paper/1383/en

Vancouver: Copy

KHOSRAVI N.. Spherically symmetric solutions in Ü ber-gravity. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2019;19(3 ):565-570. Available from: https://sid.ir/paper/1383/en

IEEE: Copy

N. KHOSRAVI, “Spherically symmetric solutions in Ü ber-gravity,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 19, no. 3 , pp. 565–570, 2019, [Online]. Available: https://sid.ir/paper/1383/en

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