A quantum time machine

Foundations of Physics 21 (8):947-958 (1991)
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Abstract

A novel description of quantum systems is employed for constructing a “time machine” capable of shifting in time the wave function of a quantum system. This device uses gravitational time dilations and a peculiar quantum interference effect due to preselection and postselection. In most trials this time machine fails to operate but when it does succeed it accomplishes tasks which no other machine can

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Lev Vaidman
Tel Aviv University

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Time-Symmetrized Counterfactuals in Quantum Theory.Lev Vaidman - 1999 - Foundations of Physics 29 (5):755-765.

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