Difference between revisions of "Unitarity"
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Revision as of 21:55, 8 January 2024
The unitarity principle is a fundamental concept in quantum mechanics that states that the time evolution of a quantum state according to the Schrödinger equation is mathematically represented by a unitary operator 1. This means that the probability of all possible outcomes of a quantum interaction must sum to 100% 2. The principle of unitarity is a basic postulate of quantum mechanics, while generalizations of or departures from unitarity are part of speculations about theories that may go beyond quantum mechanics 1. The unitarity principle is a general feature of time evolution under the Schrödinger equation, and it is typically taken as an axiom in quantum mechanics
[1]- ↑ Charlie Wood, Physicists Rewrite a Quantum Rule That Clashes With Our Universe (2022-09-26) https://www.quantamagazine.org/physicists-rewrite-a-quantum-rule-that-clashes-with-our-universe-20220926/
