XXV Workshop on Geometric Methods in Physics 2-8.07.2006

Arno Bohm

Time Asymmetric Quantum Theory

Quantum Mechanics is usually considered as a time symmetric theory with reversible time evolution. But quantum physics has its own fundamental arrow of time, because a quantum state must be prepared first, before an observable can be measured in this state. Starting with an experimental justification of this time asymmetry, it will be explained how a simple modification of standard quantum mechanics will lead to a time asymmetric, unified theory of non-relativistic and relativistic resonance and decay phenomena.