Results 171 to 180 of about 13,985 (193)

Quantum causality in closed timelike curves

Physica Scripta, 2015
Although general relativity allows the existence of closed timelike curves (CTCs), self-consistency problems arise (the 'grandfather paradox' among others). It is known that quantum mechanical consideration of the matter formally removes all the paradoxes, but the questions about causal structure remain. On the other hand, the idea of postselected CTCs
S M Korotaev, E O Kiktenko
openaire   +1 more source

(2+1)-dimensional spacetimes containing closed timelike curves

Physical Review D, 1994
We investigate the global geometries of (2+1)-dimensional spacetimes as characterized by the transformations undergone by tangent spaces upon parallel transport around closed curves. We critically discuss the use of the term ``total energy-momentum'' as a label for such parallel-transport transformations, pointing out several problems with it.
, Headrick, , Gott
openaire   +2 more sources

Timelike Circular Surfaces and Singularities in Minkowski 3-Space

Symmetry, 2022
Yanlin Li, Fatemah Mofarreh, Rashad A Abdel-Baky   +2 more
exaly  

A Dynamical Approach to Position Vector of Timelike Curve by Vectorial Momentum, Torque and Tangential Dual Curve

Journal of Nonlinear Mathematical Physics, 2022
AyŞe Yavuz
exaly  

Darboux Associate Curves of Timelike Curves in E13

In this paper, we introduce k-directional Darboux curves of a given timelike curve alpha lying on a timelike surface in Minkowski 3-space E-1(3) as the integral curves of some vector fields generated by the Darboux frame along the curve. The relationships of such associate curves are given including the relationship of their curvatures.
Ozturk, Ufuk, Mahmood, Ghassan Ali Mahmood   +1 more
openaire   +1 more source

Singularities for Timelike Developable Surfaces in Minkowski 3-Space

Symmetry, 2023
Yanlin Li, Sahar H Nazra, Rashad A Abdel-Baky   +2 more
exaly  

On The Directional Associated Curves of Timelike Space Curve

2019
In this work, the directional associated curves of timelike space curve in Minkowski 3-space by using q-frame are studied. We investigate quasi normal-binormal direction and donor curves of the timelike curve with q-frame. Finally, some new associated curves are constructed and plotted.
UGUR KAYMANLİ, Gül, EKİCİ, Cumali, DEDE, Mustafa   +2 more
openaire   +1 more source

Singularity Properties of Timelike Sweeping Surface in Minkowski 3-Space

Symmetry, 2022
Yanlin Li, Sahar H Nazra, Rashad A Abdel-Baky   +2 more
exaly  

Directional spherical indicatrices of timelike space curve

International Journal of Geometric Methods in Modern Physics, 2020
Gul Ugur Kaymanli, Mustafa Dede
exaly  

An approach to characterizations of null curves lying in timelike ruled surfaces

Soft Computing, 2022
Yasin Ünlütürk
exaly