scholarly journals Extending the geometric deformation: New black hole solutions

2016 ◽  
Vol 41 ◽  
pp. 1660132 ◽  
Author(s):  
Jorge Ovalle
Keyword(s):  
Black Hole ◽  
Gravitational Field ◽  
Higher Order ◽  
Specific Form ◽  
Higher Order Terms ◽  
Geometric Deformation ◽  
Black Hole Solutions ◽  
Deformation Approach ◽  
Charge Formula ◽  
Schwarzschild Radius

By using the extension of the Minimal Geometric Deformation approach, recently developed to investigate the exterior spacetime of a self-gravitating system in the Braneworld, we identified a master solution for the deformation undergone by the radial metric component when time deformations are produced by bulk gravitons. A specific form for the temporal deformation is used to generate a new exterior solution with a tidal charge [Formula: see text]. The main feature of this solution is the presence of higher-order terms in the tidal charge, thus generalizing the well known tidally charged solution. The horizon of the black hole lies inside the Schwarzschild radius, [Formula: see text], indicating that extra-dimensional effects weaken the gravitational field.

scholarly journals A way of decoupling gravitational sources in pure Lovelock gravity

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Milko Estrada
Keyword(s):  
Black Hole ◽  
Extra Dimensions ◽  
De Sitter Space ◽  
Analytic Solutions ◽  
De Sitter ◽  
Lovelock Gravity ◽  
Regular Black Hole ◽  
Physical Interest ◽  
Geometric Deformation ◽  
Black Hole Solutions

Abstract We provide an algorithm that shows how to decouple gravitational sources in pure Lovelock gravity. This method allows to obtain several new and known analytic solutions of physical interest in scenarios with extra dimensions and with presence of higher curvature terms. Furthermore, using our method, it is shown that applying the minimal geometric deformation to the Anti de Sitter space time it is possible to obtain regular black hole solutions.

scholarly journals Gravitational cells.The formula of the gravitational constant. Calculation of the value of the gravitational constant in the region of a black hole.

2021 ◽  
Author(s):  
Andrey Chernov
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Gravitational Field ◽  
Theoretical Basis ◽  
Gravitational Constant ◽  
Physical Constant ◽  
The Body ◽  
Huge Number ◽  
Scientific Substantiation ◽  
Schwarzschild Radius

Abstract In this study, a new concept is introduced into physics - gravitational cells. These cells are densely compressed elementary particles: a proton and an electron. The body of a black hole consists of a huge number of such cells. On this theoretical basis, using the Schwarzschild radius formula and the adapted Coulomb formula, a formula for the gravitational constant was obtained and its value in the gravitational field of black holes was calculated, 𝑮𝟎=𝟔,𝟕𝟗𝟐𝟕∙𝟏𝟎−𝟏𝟏. Also, scientific substantiation of the value of the usual gravitational constant 𝑮 was obtained. In this study, a new physical constant was determined - the mass of the gravitational cell of a black hole 𝒎𝟎=𝟏,𝟓𝟏𝟏𝟓𝟗𝟑∙ 𝟏𝟎−𝟐𝟕 kg. Based on the results of the study, conclusions were drawn regarding the gravitational mass of the proton and the electron.

scholarly journals Higher-order black-hole solutions in N=2 supergravity and Calabi-Yau string backgrounds

1998 ◽  
Vol 429 (3-4) ◽  
pp. 289-296 ◽  
Author(s):  
Klaus Behrndt ◽  
Gabriel Lopes Cardoso ◽  
Bernard de Wit ◽  
Dieter Lüst ◽  
Thomas Mohaupt ◽  
...  
Keyword(s):  
Black Hole ◽  
Higher Order ◽  
Black Hole Solutions

scholarly journals ON ELECTROGRAVITY DUALITY

1999 ◽  
Vol 14 (05) ◽  
pp. 337-342 ◽  
Author(s):  
NARESH DADHICH
Keyword(s):  
Black Hole ◽  
Gravitational Field ◽  
Topological Defect ◽  
Flat Space ◽  
Interesting Property ◽  
Space Time ◽  
Global Monopole ◽  
Duality Transformation ◽  
Original Space ◽  
Black Hole Solutions

By resolving the gravitational field into electric and magnetic parts, we define an electrogravity duality transformation and discover an interesting property of the field. Under the duality transformation, a vacuum/flat space–time maps into the original space–time with a topological defect of global monopole/texture. The electrogravity-duality is thus a topological defect generating process. It turns out that all black hole solutions possess dual solutions that imbibe a global monopole.

scholarly journals Higher order curvature generalizations of Bartnick–McKinnon and coloured black hole solutions in d=5

2003 ◽  
Vol 561 (1-2) ◽  
pp. 161-173 ◽  
Author(s):  
Yves Brihaye ◽  
A. Chakrabarti ◽  
Betti Hartmann ◽  
D.H. Tchrakian
Keyword(s):  
Black Hole ◽  
Higher Order ◽  
Black Hole Solutions

scholarly journals The Mirror Reversal Mechanism on Black Hole Collapse and Singularity Eruption in Cosmic Continuum

2021 ◽  
Author(s):  
Xijia Wang
Keyword(s):  
Black Hole ◽  
Gravitational Field ◽  
Schwarzschild Black Hole ◽  
Strong Gravitational Field ◽  
Conversion Point ◽  
Mirror Reversal ◽  
System Collapse ◽  
Starting Point ◽  
Reversal Mechanism ◽  
Schwarzschild Radius

Abstract In Cosmic continuum, the cosmic system collapse into a Schwarzschild black hole under the action of a strong gravitational field, and the Planck spheres at the center of the black hole continues to collapse into dark mass bodies, forming dark celestial body and singularity. The Schwarzschild radius is the upper limit of a black hole, and the Planck sphere is the lower limit of a black hole. The singularity is the conversion point between the old and new cosmic systems. The singularity erupts the Planck spheres under the action of a strong gravitational field, and the Planck spheres expands outward to form a new cosmic system. The Planck sphere is both the end of the old cosmic system and the starting point of the new cosmic system. The black hole collapse and the singularity eruption are mirror images of each other. The Planck sphere is the front of the mirror, and the singularity is the back of the mirror.

scholarly journals Energy issue for a class of modified higher order gravity black hole solutions

2011 ◽  
Vol 84 (2) ◽  
Author(s):  
G. Cognola ◽  
O. Gorbunova ◽  
L. Sebastiani ◽  
S. Zerbini
Keyword(s):  
Black Hole ◽  
Higher Order ◽  
Energy Issue ◽  
Higher Order Gravity ◽  
Black Hole Solutions
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