The Two-State Vector Formalism
Abstract
Description
The two-state vector formalism (TSVF), the time-symmetric description of the standard quantum mechanics originated by Aharonov, Bergmann and Lebowitz is reviewed. The TSVF describes a quantum system at a particular time by two quantum states: the usual one, evolving forward in time, defined by the results of a complete measurement at the earlier time, and by the quantum state evolving backward in time, defined by the results of a complete measurement at a later time.
6 pages, entry for a forthcoming "Compendium of Quantum Physics"
6 pages, entry for a forthcoming "Compendium of Quantum Physics"