Discontinuous quantum evolutions in the presence of closed timelike curves

Richard DeJonghe, Kimberly Frey, and Tom Imbo
Phys. Rev. D 81, 087501 – Published 20 April 2010

Abstract

We consider Deutsch’s computational model of a quantum system evolving in a spacetime containing closed timelike curves. Although it is known that this model predicts nonlinear and nonunitary evolutions of the system, we demonstrate that it also gives rise to evolutions which are a discontinuous function of the input state. These discontinuities persist for the most natural modifications of Deutsch’s approach.

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  • Received 11 January 2010

DOI:https://doi.org/10.1103/PhysRevD.81.087501

©2010 American Physical Society

Authors & Affiliations

Richard DeJonghe, Kimberly Frey, and Tom Imbo

  • Department of Physics, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, Illinois 60607, USA

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Issue

Vol. 81, Iss. 8 — 15 April 2010

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