Difference between revisions of "Unitarity"
From MgmtWiki
(Created page with "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 mathemat...") |
|||
| Line 1: | Line 1: | ||
| − | 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 | + | 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. This means that the probability of all possible outcomes of a quantum interaction must sum to 100%. 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. 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.<ref>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/</ref> |
| − | |||
| − | <ref>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/</ref> | ||
Revision as of 21:59, 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. This means that the probability of all possible outcomes of a quantum interaction must sum to 100%. 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. 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/
