Časlav Brukner, professor of the University of Vienna is the next invited speaker of the Wigner Colloquia.

Title of his lecture: How does a quantum particle see the world?

Date: 4 October 2022, 14:00 p.m.

Place: SZFI (Building 1) auditorium

Zoom linkhttps://wigner-hu.zoom.us/j/85139581441?pwd=bk5pVFRtS3JjRVVTTWlKNkhhc04wQT09

How does a quantum particle see the world?

According to one of the most fundamental symmetries in physics, an observer on a moving train applies the same laws to describe a physical system as an observer standing on the platform - the form of the physical laws is invariant when choosing a frame of reference. However, reference frames such as the train and the platform are physical systems and therefore ultimately obey quantum mechanical laws. In particular, they could be in a quantum state of superposition of different positions or momenta. So what would the description of physical systems look like to an observer in such "quantum reference frames" (QRF)? Are the forms of physical laws invariant when changing QRFs? I will introduce the notion of QRFs, both in the non-relativistic and relativistic contexts, and show how they help us solve some open problems in modern physics.