Results 11 to 20 of about 272 (172)

Open Timelike Curves Violate Heisenberg’s Uncertainty Principle [PDF]

Physical Review Letters, 2013
Toy models for quantum evolution in the presence of closed timelike curves (CTCs) have gained attention in the recent literature due to the strange effects they predict. The circuits that give rise to these effects appear quite abstract and contrived, as they require non-trivial interactions between the future and past which lead to infinitely ...
Pienaar, J. L., Ralph, T. C., Myers, C. R.   +2 more
openaire   +4 more sources

Closed timelike curves in superfluid 3He [PDF]

Physics Letters A, 1998
7 pages, LaTex, to appear in Phys.
González-Díaz, Pedro F., Sigüenza, Carmen L.   +1 more
openaire   +3 more sources

On the Timelike Circular Surface and Singularities in Minkowski 3-Space

Axioms, 2023
In this paper, we have parameterized a timelike (Tlike) circular surface (CIsurface) and have obtained its geometric properties, including striction curves, singularities, Gaussian and mean curvatures.
Areej A. Almoneef, Rashad A. Abdel-Baky
doaj   +1 more source

Geometry of Curves with Fractional Derivatives in Lorentz Plane

Journal of New Theory, 2022
In this paper, the geometry of curves is discussed based on the Caputo fractional derivative in the Lorentz plane. Firstly, the tangent vector of a spacelike plane curve is defined in terms of the fractional derivative.
Meltem Öğrenmiş
doaj   +1 more source

Unwrapping Closed Timelike Curves [PDF]

Foundations of Physics, 2008
Closed timelike curves (CTCs) appear in many solutions of the Einstein equation, even with reasonable matter sources. These solutions appear to violate causality and so are considered problematic. Since CTCs reflect the global properties of a spacetime, one can attempt to change its topology, without changing its geometry, in such a way that the former
openaire   +2 more sources

Ringholes and closed timelike curves [PDF]

Physical Review D, 1996
11 pages, RevTex, 4 figures available upon ...
openaire   +3 more sources

Introduction to Timelike Uniform B-splineCurves in Minkowski-3 Space

Journal of Mathematical Sciences and Modelling, 2018
The intention of this article is to study on timelike uniform B-spline curves in Minkowski-3 space. In our paper, we take the control points of uniform B-spline curves as a timelike point in Minkowski-3 space.
Hatice Kuşak Samancı
doaj   +1 more source

Hamiltonian Analysis of f(Q)$f(\mathbb {Q})$ Gravity and the Failure of the Dirac–Bergmann Algorithm for Teleparallel Theories of Gravity

Fortschritte der Physik, Volume 71, Issue 12, December 2023., 2023
Abstract In recent years, f(Q)$f(\mathbb {Q})$ gravity has enjoyed considerable attention in the literature and important results have been obtained. However, the question of how many physical degrees of freedom the theory propagates—and how this number may depend on the form of the function f—has not been answered satisfactorily. In this article it is
Fabio D'Ambrosio, Lavinia Heisenberg, Stefan Zentarra   +2 more
wiley   +1 more source

Perturbative Solution of the Einstein Constraints with Spin and Momentum Far Away From a Binary Source in the Bowen‐York Formalism

Fortschritte der Physik, Volume 71, Issue 8-9, September 2023., 2023
Abstract The momentum and Hamiltonian constraints of vacuum Einstein equations, within the Bowen‐York formalism, for two interacting black holes in close separation, with anti‐parallel spins and anti‐parallel linear momenta is studied. An analytical solution using perturbation theory is given.
Emel Altas, Emine Ertugrul, Bayram Tekin
wiley   +1 more source

One-Parameter Hyperbolic Spatial Locomotions and Invariants of the Axode

Mathematics, 2023
In this paper, based on the E. Study map, direct appearances were sophisticated for one-parameter hyperbolic dual spherical locomotions and invariants of the axodes.
Areej A. Almoneef, Rashad A. Abdel-Baky
doaj   +1 more source