Results 111 to 120 of about 13,985 (193)

Pseudo-timelike loops in signature changing semi-Riemannian manifolds with a transverse radical

Results in Physics
In 1983, Hartle and Hawking proposed the no-boundary proposal, suggesting that the universe has no beginning in the sense of a spacetime singularity or boundary. Nevertheless, there is an origin of time.
N.E. Rieger, W. Hasse
doaj   +1 more source

Lorentzian Structure and Curvature Analysis of Osculating Type-2 Ruled Surfaces via the Type-2 Bishop Frame

Mathematics
This study investigates the geometry of osculating type-2 ruled surfaces in Minkowski 3-space E13, formulated through the Type-2 Bishop frame associated with a spacelike curve whose principal normal is timelike and binormal is spacelike.
Mohammed Messaoudi, Emad Solouma, Mohammed N. Alshehri, Abdulrahman F. Aljohani, Marin Marin   +4 more
doaj   +1 more source

Quantum Mechanics and Closed Timelike Curves

, 2007
General relativity allows solutions exhibiting closed timelike curves. Time travel generates paradoxes and quantum mechanics generalizations were proposed to solve those paradoxes. The implications of self-consistent interactions on acausal region of space-time are investigated.
openaire   +2 more sources

The bound orbits and gravitational waveforms of timelike particles around renormalization group improved Kerr black holes

European Physical Journal C: Particles and Fields
In this article, we investigate the bound orbits of the timelike particles and the gravitational waveforms emitted from these orbits around a renormalization group improved Kerr black hole in the framework of the asymptotic safety approach.
Yong-Zhuang Li, Xiao-Mei Kuang
doaj   +1 more source

Hyperbolic angles in Lorentzian length spaces and timelike curvature bounds. [PDF]

J Lond Math Soc, 2023
Beran T, Sämann C.
europepmc   +1 more source

MINKOWSKI 3-UZAYINDA TİMELİKE EĞRİNİN BİSHOP ÇATISI

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
Biz bu çalışmada, BISHOP (1975) tarafından elde edilen sonucu, Minkowski 3- uzayında timelike eğriler için çalıştık. İlaveten, timelike eğriler için Darboux vectörü(matrisi) bulundu.
Bahaddin BÜKCÜ, Murat Kemal KARACAN
doaj  

Life on a closed timelike curve

Classical and Quantum Gravity
Abstract We study the internal dynamics of a hypothetical spaceship traveling on a close timelike curve in an axially symmetric Universe. We choose the curve so that the generator of evolution in proper time is the angular momentum. Using Wigner’s theorem, we prove that the energy levels internal to the spaceship must undergo spontaneous
openaire   +2 more sources

Null Distance and Convergence of Lorentzian Length Spaces. [PDF]

Ann Henri Poincare, 2022
Kunzinger M, Steinbauer R.
europepmc   +1 more source

The Singularity Theorems of General Relativity and Their Low Regularity Extensions. [PDF]

Jahresber Dtsch Math Ver, 2023
Steinbauer R.
europepmc   +1 more source

A note on the Gannon-Lee theorem. [PDF]

Lett Math Phys, 2021
Schinnerl B, Steinbauer R.
europepmc   +1 more source