Zobrazeno 1 - 10
of 21 593
pro vyhledávání: '"gravitational field"'
Publikováno v:
地球与行星物理论评, Vol 55, Iss 5, Pp 501-512 (2024)
Modeling the gravitational field of irregular celestial bodies is a common problem currently faced by the researchers in the fields of Earth science and deep space exploration. This paper reviews the developmental history of gravitational field model
Externí odkaz:
https://doaj.org/article/206ea7ab1cbe47c780a41a0d9b5d51e4
Publikováno v:
Physics For You. Oct2022, Vol. 30 Issue 10, p30-36. 6p.
Autor:
Valdir Barbosa Bezerra, Herondy Francisco Santana Mota, Augusto P. C. M. Lima, Geová Alencar, Celio Rodrigues Muniz
Publikováno v:
Physics, Vol 6, Iss 3, Pp 1046-1071 (2024)
In this paper, we review some recent findings related to the Casimir effect. Initially, the thermal corrections to the vacuum Casimir energy density are calculated, for a quantum scalar field, whose modes propagate in the (3+1)-dimensional Euclidean
Externí odkaz:
https://doaj.org/article/c22ae85d8ef843769bc133be1d7c861b
Autor:
Ken-ji Hamada
Publikováno v:
Particles, Vol 7, Iss 2, Pp 465-476 (2024)
The effective action in the renormalizable quantum theory of gravity provides entropy because the total Hamiltonian vanishes. Since it is a renormalization group invariant that is constant in the process of cosmic evolution, we can show conservation
Externí odkaz:
https://doaj.org/article/ecfc51062d5747b39e161b19b56fb297
Akademický článek
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Publikováno v:
Universe, Vol 10, Iss 9, p 355 (2024)
We analyze a rotating black hole (BH) in a four-dimensional space-time embedded in five-dimensional flat bulk. In Boyer–Lindquist coordinates, we use a generic extension of the Kerr metric by the line element of Gürses–Gürsey metric. We discuss
Externí odkaz:
https://doaj.org/article/350b5feff3db4911b9a5cc8ed574508a
Autor:
LEMOS, JOSÉ P. S.1 joselemos@ist.utl.pt, PANI, PAOLO1,2 paolo.pani@ist.utl.pt
Publikováno v:
Thirteenth Marcel Grossmann Meeting, The: on Recent Developments in Theoretical & Experimental General Relativity, Astrophysics & Relativistic Field Theories - Proceedings of the Mg13 Meeting on General Relativity (In 3 Volumes). 2015, p1047-1055. 9p.
Autor:
V.A. Litovchenko
Publikováno v:
Karpatsʹkì Matematičnì Publìkacìï, Vol 15, Iss 1, Pp 222-235 (2023)
We consider a pseudodifferential equation of parabolic type with a fractional power of the Laplace operator of order $\alpha\in(0;1)$ acting with respect to the spatial variable. This equation naturally generalizes the well-known fractal diffusion eq
Externí odkaz:
https://doaj.org/article/ef52dc756d8847f0b13d43da06604b33
Autor:
Baocheng Zhang
Publikováno v:
Results in Physics, Vol 57, Iss , Pp 107345- (2024)
Entanglement can be generated through the gravitational interaction between two massive bodies that are initially in a product state. This shows that the gravitational field is quantum. When the third massive body is introduced and the gravitational
Externí odkaz:
https://doaj.org/article/418f0fd26ea545ed8d87a55337370ce6
Autor:
Zuber, Maria T.1 (AUTHOR) zuber@mit.edu, Smith, David E.1 (AUTHOR), Neumann, Gregory A.2 (AUTHOR), Goossens, Sander3 (AUTHOR), Andrews-Hanna, Jeffrey C.4,5 (AUTHOR), Head, James W.6 (AUTHOR), Kiefer, Walter S.7 (AUTHOR), Asmar, Sami W.8 (AUTHOR), Konopliv, Alexander S.8 (AUTHOR), Lemoine, Frank G.2 (AUTHOR), Isamu Matsuyama9 (AUTHOR), Melosh, H. Jay10 (AUTHOR), McGovern, Patrick J.7 (AUTHOR), Nimmo, Francis11 (AUTHOR), Phillips, Roger J.5 (AUTHOR), Solomon, Sean C.12,13 (AUTHOR), Taylor, G. Jeffrey14 (AUTHOR), Watkins, Michael M.8,15 (AUTHOR), Wieczorek, Mark A.16 (AUTHOR), Williams, James G.8 (AUTHOR)
Publikováno v:
Science. 10/28/2016, Vol. 354 Issue 6311, p438-441. 4p. 2 Graphs.