Results 11 to 20 of about 281 (174)
Simulations of Closed Timelike Curves [PDF]
Foundations of Physics, 2017 Proposed models of closed timelike curves (CTCs) have been shown to enable powerful information-processing protocols. We examine the simulation of models of CTCs both by other models of CTCs and by physical systems without access to CTCs. We prove that the recently proposed transition probability CTCs (T-CTCs) are physically equivalent to postselection
Todd A. Brun, Mark M. Wilde
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CLOSED TIMELIKE CURVES IN RELATIVISTIC COMPUTATION [PDF]
Parallel Processing Letters, 2012 In this paper, we investigate the possibility of using closed timelike curves (CTCs) in relativistic hypercomputation. We introduce a wormhole based hypercomputation scenario which is free of the common worries, such as the blueshift problem. We also discuss the physical reasonability of our scenario, and why we cannot simply ignore the possibility of ...
Hajnal Andréka +2 more
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Experimental simulation of closed timelike curves [PDF]
Nature Communications, 2014 9 pages, 8 ...
Ringbauer, Martin +4 more
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Unitarity in the presence of closed timelike curves [PDF]
Physical Review D, 2006 We conjecture that, in certain cases, quantum dynamics is consistent in the presence of closed timelike curves. We consider time dependent orbifolds of three dimensional Minkowski space describing, in the limit of large AdS radius, BTZ black holes inside the horizon.
Cornalba, Lorenzo, Costa, Miguel S.
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Closed timelike curves in the Galileon model [PDF]
Journal of High Energy Physics, 2011 16 pages, 2 jpg figures, version published in JHEP (Nov 8) add refs, details and stability ...
Evslin, Jarah, Qiu, Taotao
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Ringholes and closed timelike curves [PDF]
Physical Review D, 1996 11 pages, RevTex, 4 figures available upon ...
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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
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The inverse kinematics of rolling contact of timelike curves lying on timelike surfaces
Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2019 Summary: Rolling contact between two surfaces plays an important role in robotics and engineering such as spherical robots, single wheel robots, and multi-fingered robotic hands to drive a moving surface on a fixed surface. The rolling contact pairs have one, two, or three degrees of freedom (DOFs) consisting of angular velocity components.
Aydınalp, Mehmet +2 more
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A comment on Bonnor–Steadman closed timelike curves [PDF]
General Relativity and Gravitation, 2008 The existence and stability closed timelike curves in a Bonnor-Ward spacetime without torsion line singularities is shown by exhibiting particular examples.
Rosa, Valéria M., Letelier, Patricio S.
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Page curve and island in EGB gravity
Nuclear Physics B, 2023 In this paper, the information paradox on lower-dimensional Gauss–Bonnet gravity, known as a three-dimensional EGB black hole, is studied using the quantum extremal island approach.
Ankit Anand
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