Non-equilibrium Dynamics and Random Matrices | |

Topic: | Acquiring Knowledge Through Information Loss |

Speaker: | Jürg Fröhlich |

Affiliation: | ETH Zürich; Visiting Professor, School of Mathematics |

Date: | Tuesday, December 10 |

Time/Room: | 2:00pm - 3:00pm/S-101 |

After a short introduction to some ideas on quantum probability theory I discuss the roles played by loss of information and entanglement in the emergence of facts in quantum-mechanical experiments and observations. Besides explaining why "information loss" is a fundamental phenomenon, the goal of my discussion is to arrive at a consistent theory of "von Neumann measurements". I then discuss some recent results in the theory of non-demolition measurements and speculate how they might explain the appearance of particle tracks in detectors. The main mathematical tools underlying my discussion are borrowed from the theory of operator algebras and from classical probability theory.