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pro vyhledávání: '"extended gravity"'
We elaborate further on the one-loop effective action of the IKKT model on 3 + 1 dimensional covariant quantum spacetime in the presence of fuzzy extra dimensions. In particular, we describe the one-loop effective action in terms of a remarkable $SO(
Externí odkaz:
http://arxiv.org/abs/2411.02598
We obtain black hole rotating solutions for Horndesky theory (specific partial case), bumblebee model and Gauss-Bonnet scalar gravity using the specially improved Newman-Janis algorithm. The shadow profiles for these metrics were calculated. Applying
Externí odkaz:
http://arxiv.org/abs/2407.04742
Publikováno v:
Int. Jour. Mod. Phys. D 2441015 (2024)
Chae's analyses on GAIA observations of wide binary stars have fortified the paradigm of extended gravity with particular attention to MOND-like theories. We recall that, starting from the origin of Einstein's general relativity, the request of Mach
Externí odkaz:
http://arxiv.org/abs/2405.08024
Autor:
Chai, Ji Wen1 (AUTHOR), Wang, Li Hao2 (AUTHOR) wlhsoul@126.com
Publikováno v:
Applied Economics. Dec2024, Vol. 56 Issue 57, p7912-7921. 10p.
An extended gravity theory is used to explore the possibility of non-exotic matter traversable wormholes. In the extended gravity theory, additional terms linear and quadratic in the trace of the energy momentum tensor are considered in the Einstein-
Externí odkaz:
http://arxiv.org/abs/2308.08923
Autor:
Tao, Yi-Xiao
In this short paper, we write down the Berends-Giele (BG) currents for extended gravity explicitly and discuss the unifying relations of these BG currents. This new tool, different from the double field theory current formally, may deepen our underst
Externí odkaz:
http://arxiv.org/abs/2309.15657
Publikováno v:
General Relativity and Gravitation, 2023 - open access
We present a covariant study of static space-times, as such and as solutions of gravity theories. By expressing the relevant tensors through the velocity and the acceleration vectors that characterise static space-times, the field equations provide a
Externí odkaz:
http://arxiv.org/abs/2306.05863
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Extended gravity is widely constrained in different astrophysical and astronomical systems. Since these different systems are based on different scales it is not trivial to get a combined constraint that is based on different phenomenology. Here, for
Externí odkaz:
http://arxiv.org/abs/2303.15040