Publication details
`The no-signaling condition and quantum dynamics
| Authors | |
|---|---|
| Year of publication | 2001 |
| Type | Article in Periodical |
| Magazine / Source | Physical Review Letters |
| MU Faculty or unit | |
| Citation | |
| Field | Informatics |
| Keywords | BELL INEQUALITIES MECHANICS EQUATIONS VIOLATION LOCALITY |
| Description | 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, and (3) superluminal communication is excluded. This result also constrains possible nonlinear modifications of quantum physics. |
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