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- Wave_function_collapse abstract "In quantum mechanics, wave function collapse is the phenomenon in which a wave function—initially in a superposition of several eigenstates—appears to reduce to a single eigenstate after interaction with a measuring apparatus. It is the essence of measurement in quantum mechanics, and connects the wave function with classical observables like position and momentum. Collapse is one of two processes by which quantum systems evolve in time; the other is continuous evolution via the Schrödinger equation. However in this role, collapse is merely a black box for thermodynamically irreversible interaction with a classical environment. Calculations of quantum decoherence predict apparent wave function collapse when a superposition forms between the quantum system's states and the environment's states. Significantly, the combined wave function of the system and environment continue to obey the Schrödinger equation.When the Copenhagen interpretation was first expressed, Niels Bohr postulated wave function collapse to cut the quantum world from the classical. This tactical move allowed quantum theory to develop without distractions from interpretational worries. Nevertheless it was debated, for if collapse were a fundamental physical phenomenon, rather than just the epiphenomenon of some other process, it would mean nature were fundamentally stochastic, i.e. nondeterministic, an undesirable property for a theory. This issue remained until quantum decoherence entered mainstream opinion after its reformulation in the 1980s. Decoherence explains the perception of wave function collapse in terms of interacting large- and small-scale quantum systems, and is commonly taught at the graduate level (e.g. the Cohen-Tannoudji textbook). The quantum filtering approach and the introduction of quantum causality non-demolition principle allows for a classical-environment derivation of wave function collapse from the stochastic Schrödinger equation.".
- Wave_function_collapse wikiPageID "71138".
- Wave_function_collapse wikiPageRevisionID "602689294".
- Wave_function_collapse hasPhotoCollection Wave_function_collapse.
- Wave_function_collapse subject Category:Concepts_in_physics.
- Wave_function_collapse subject Category:Quantum_measurement.
- Wave_function_collapse type Abstraction100002137.
- Wave_function_collapse type Cognition100023271.
- Wave_function_collapse type Concept105835747.
- Wave_function_collapse type Content105809192.
- Wave_function_collapse type FundamentalPhysicsConcepts.
- Wave_function_collapse type Idea105833840.
- Wave_function_collapse type PsychologicalFeature100023100.
- Wave_function_collapse comment "In quantum mechanics, wave function collapse is the phenomenon in which a wave function—initially in a superposition of several eigenstates—appears to reduce to a single eigenstate after interaction with a measuring apparatus. It is the essence of measurement in quantum mechanics, and connects the wave function with classical observables like position and momentum.".
- Wave_function_collapse label "Colapso da função de onda".
- Wave_function_collapse label "Colapso de la función de onda".
- Wave_function_collapse label "Collasso della funzione d'onda".
- Wave_function_collapse label "Ineenstorten van de golffunctie".
- Wave_function_collapse label "Kollaps der Wellenfunktion".
- Wave_function_collapse label "Réduction du paquet d'onde".
- Wave_function_collapse label "Wave function collapse".
- Wave_function_collapse label "Редукция фон Неймана".
- Wave_function_collapse label "波函數塌縮".
- Wave_function_collapse sameAs Kolaps_vlnové_funkce.
- Wave_function_collapse sameAs Kollaps_der_Wellenfunktion.
- Wave_function_collapse sameAs Colapso_de_la_función_de_onda.
- Wave_function_collapse sameAs Réduction_du_paquet_d'onde.
- Wave_function_collapse sameAs Collasso_della_funzione_d'onda.
- Wave_function_collapse sameAs Ineenstorten_van_de_golffunctie.
- Wave_function_collapse sameAs Colapso_da_função_de_onda.
- Wave_function_collapse sameAs m.0jcv0.
- Wave_function_collapse sameAs Q842189.
- Wave_function_collapse sameAs Q842189.
- Wave_function_collapse sameAs Wave_function_collapse.
- Wave_function_collapse wasDerivedFrom Wave_function_collapse?oldid=602689294.
- Wave_function_collapse isPrimaryTopicOf Wave_function_collapse.