Results 91 to 100 of about 13,955 (195)
Black Holes as Frozen Stars: Regular Interior Geometry
Fortschritte der Physik, Volume 72, Issue 1, January 2024.Abstract The authors have proposed a model geometry for the interior of a regular black hole (BH) mimicker, the frozen star, whose most startling feature is that each spherical shell in its interior is a surface of infinite redshift. The geometry is a solution of the Einstein equations which is sourced by an exotic matter with maximally negative radial
Ram Brustein +3 more
wiley +1 more source
Dynamics of geodesics around the Bardeen-AdS black hole immersed in quintessence
Results in PhysicsThis paper investigates the dynamics of the timelike and null geodesics near the Bardeen-AdS black hole immersed in quintessence. Specifically, the equation of geodesic motion is derived by solving the Hamilton–Jacobi equation of the test particles ...
Ruifang Wang, Fabao Gao, Jianwen Liu
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Time, Closed Timelike Curves and Causality [PDF]
, 2003 General Relativity is contaminated with non-trivial geometries which generate closed timelike curves. These apparently violate causality, producing time-travel paradoxes. We shall briefly discuss these geometries and analyze some of their physical aspects.
Lobo, Francisco, Crawford, Paulo
openaire +2 more sources
Are Causality Violations Undesirable?
, 2010 Causality violations are typically seen as unrealistic and undesirable features of a physical model. The following points out three reasons why causality violations, which Bonnor and Steadman identified even in solutions to the Einstein equation ...
A. Avez +20 more
core +1 more source
Characterization of the null energy condition via displacement convexity of entropy
Journal of the London Mathematical Society, Volume 109, Issue 1, January 2024.Abstract We characterize the null energy condition for an (n+1)$(n+1)$‐dimensional, time‐oriented Lorentzian manifold in terms of convexity of the relative (n−1)$(n-1)$‐Renyi entropy along displacement interpolations on null hypersurfaces. More generally, we also consider Lorentzian manifolds with a smooth weight function and introduce the Bakry–Emery ...
Christian Ketterer
wiley +1 more source
Ruled Surfaces with Constant Slope Ruling According to Darboux Frame in Minkowski Space
International Journal of Analysis and Applications, 2020 In this study, three different types of ruled surfaces are defined. The generating lines of these ruled surfaces are given by points on a curve X in Minkowski Space, while the position vector of X have constant slope with respect to the planes (t, y), (t,
Ayşe Yavuz, Yusuf Yayli
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Charged Particles Moving around a Spherically Symmetric Dilatonic Black Hole
Advances in High Energy Physics, Volume 2024, Issue 1, 2024.For the static spherically symmetric dilatonic black hole described by the Gibbons–Maeda–Garfinkle–Horowitz–Strominger geometry, we analyze the timelike trajectories for electrically charged test particles. Both cases of an electric black hole and a magnetic one are considered.
Vitalie Lungu +4 more
wiley +1 more source
Osculating Mate of a Curve in Minkowski 3-Space
AxiomsIn this paper, we introduce and develop the concept of osculating curve pairs in the three-dimensional Minkowski space. By defining a vector lying in the intersection of osculating planes of two non-lightlike curves, we characterize osculating mates ...
İskender Öztürk +2 more
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Generalized Bertrand curves with timelike (1,3)-normal plane in Minkowski space-time
Kuwait Journal of Science, 2015 In this paper, we reconsider the (1,3)-Bertrand curves with respect to the casualcharacters of (1,3)-normal plane which is a plane spanned by the principal normal andthe second binormal vector fields of the given curve.
ALİ UCUM +2 more
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