Relativistic dynamical reduction models: an overview of the latest results (T. Guaita)
- Date: Dec 21, 2017
- Time: 16:00 - 17:00
- Speaker: Tommaso Guaita
- Department of Physics, University of Milan, Italy
- Room: Seminar room Theory Division - B 2.46
- Host: MPQ, Theory Division
Indeed, through stochastic and non-linear corrections to the standard quantum mechanical evolution equations, it is possible to produce models that include a transition to classical behaviour for macroscopic bodies and that, in measurement-like situations, contain the wavefunction reduction process in a natural way. The models proposed so far do this successfully for non-relativistic theories. However, developing a consistent relativistic dynamical reduction model has proven to be problematic. In this talk I will analyse some of the ideas proposed in recent years to solve such problem. Firstly, I will show, through numerical calculations, that a relativistic model due to Tumulka can indeed be used to describe a single massive particle obtaining a behaviour that is in good approximation consistent. It however fails to do so if applied to multiple identical particles. A second promising approach is to use a non-standard mediating quantum field introduced by Bedingham and Pearle. I will discuss the implications and the open questions deriving from the use of such field.