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Exchange Interaction
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Geliefert zwischen Mi., 26.11.2025 und Do., 27.11.2025
Details
High Quality Content by WIKIPEDIA articles! In physics, the exchange interaction is a quantum mechanical effect which increases or decreases the expectation value of the energy or distance between two or more identical particles when their wave functions overlap. For example, the exchange interaction results in identical particles with spatially symmetric wave functions (bosons) appearing "closer together" than would be expected of distinguishable particles, and in identical particles with spatially antisymmetric wave functions (fermions) appearing "farther apart". It is the mechanism that is responsible for ferromagnetism, among other consequences. Although sometimes erroneously described as a force, the exchange interaction is a purely quantum mechanical effect without any analog in classical mechanics. It is the result of the fact that the wave function of indistinguishable particles is subject to exchange symmetry, that is, the wave function describing two particles that cannot be distinguished must be either unchanged (symmetric) or inverted in sign (antisymmetric) if the labels of the two particles are changed.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130815813
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Genre Physik & Astronomie
- EAN 9786130815813
- Format Fachbuch
- Titel Exchange Interaction
- Herausgeber Alphascript Publishing
- Anzahl Seiten 192
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