Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série IPHT-PHM
Domaines math-ph
Date Lundi 27 Mai 2019
Heure 11:00
Institut IPHT
Salle Salle Claude Itzykson, Bât. 774
Nom de l'orateur Michel Bauer
Prenom de l'orateur
Addresse email de l'orateur
Institution de l'orateur IPhT
Titre Jumps and spikes in quantum trajectorie
Résumé Indirect measurements in quantum mechanics lead to stochastic evolution equations for the density matrix, the so-called quantum trajectories. \par Generically, the measurements themselves favor wave function collapse towards certain states, while the internal evolution, if it does not preserve these states, prevents the collapse. In this talk I'll describe the regime when the time scale of the collapse is very short compared to the typical time scale of the internal evolution. In this regime, which is a strong noise regime, quantum trajectories, though continuous, are closely related to Poisson processes and a strong universality emerges. \par The mathematical tools we use have recently attracted the attention of probabilists who are now aiming at a fully rigorous treatment.
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