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No-Signaling Condition and Quantum Dynamics

Published inPhysical review letters, vol. 87, no. 17
Publication date2001
Abstract

We show that the basic dynamical rules of quantum physics can be derived from its static properties and the condition that superluminal communication is forbidden. More precisely, the fact that the dynamics has to be described by linear completely positive maps on density matrices is derived from the following assumptions: (1) physical states are described by rays in a Hilbert space, (2) probabilities for measurement outcomes at any given time are calculated according to the usual trace rule, (3) superluminal communication is excluded. This result also constrains possible non-linear modifications of quantum physics.

Citation (ISO format)
SIMON, Christoph, BUŽEK, Vladimír, GISIN, Nicolas. No-Signaling Condition and Quantum Dynamics. In: Physical review letters, 2001, vol. 87, n° 17. doi: 10.1103/PhysRevLett.87.170405
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ISSN of the journal0031-9007
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