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dc.contributor.authorGondran, Michel
dc.contributor.authorGondran, Alexandre
dc.contributor.authorKenoufi, Abdel
dc.date.accessioned2013-10-01T14:44:16Z
dc.date.available2013-10-01T14:44:16Z
dc.date.issued2011
dc.identifier.urihttps://basepub.dauphine.fr/handle/123456789/11740
dc.language.isoenen
dc.subjectAnalytical Solutionsen
dc.subjectWave Functionsen
dc.subjectRotational Motionen
dc.subjectDensity Matricesen
dc.subjectStern-Garlach Experimenten
dc.subjectQuantum Mechanicsen
dc.subject.ddc519en
dc.titleDecoherence time and spin measurement in the Stern-Gerlach experimenten
dc.typeCommunication / Conférence
dc.description.abstractenWe present an analytical solution to the decoherence time for the spin measurement and the diagonalization of the density matrix of spin variables in the Stern-Gerlach experiment. This solution requires the calculation of the Pauli spinor with a spatial extension, which is not found in quantum mechanics textbooks. With this full spinor and the measured position of the particle we demonstrate the three postulates of quantum measurement: quantization, spectral decomposition and wave function reduction. The transition from a quantum superposition to a statistical mixture is well explained in this way, but not the single result that always emerges from a particular experiment. The spinor spatial extension also allows the introduction of the de Broglie-Bohm trajectories which give a very simple explanation of the particles' impact.en
dc.identifier.citationpages116-120en
dc.relation.ispartofseriestitleAIP Conference Proceedingsen
dc.relation.ispartofseriesnumber1424en
dc.relation.ispartoftitleFoundations of Probability and Physics - 6en
dc.relation.ispartofeditorD'Ariano, Mauro
dc.relation.ispartofeditorFei, Shao-Ming
dc.relation.ispartofeditorHaven, Emmanuel
dc.relation.ispartofeditorHiesmayr, Beatrix
dc.relation.ispartofeditorJaeger, Gregg
dc.relation.ispartofeditorKhrennikov, Andrei
dc.relation.ispartofeditorLarsson, Jan-Ake
dc.relation.ispartofpublnameAIPen
dc.relation.ispartofdate2011
dc.subject.ddclabelProbabilités et mathématiques appliquéesen
dc.relation.ispartofisbn978-0-7354-1004-6en
dc.relation.conftitleFoundations of Probability and Physics - 6en
dc.relation.confdate2011-06
dc.relation.confcityVäxjöen
dc.relation.confcountrySuèdeen
dc.relation.forthcomingnonen
dc.identifier.doihttp://link.aip.org/link/doi/10.1063/1.3688960en


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