[Prof. Otto Kong] Quantum Reference Frame Transformations and the Noncommutative Values of Observables

Tuesday 4 Oct 2022, 16:00 → 18:00 Asia/Seoul

Room 327 (Science Hall)

The subject of quantum reference frame transformations gets popular lately with some interesting new theoretical development partly for the reason that the physics involved is becoming experimentally accessible. The position of a position eigenstate when observed from an object with `uncertainty' in position would be seen with `uncertainty'. In fact, even the existence of entanglement is reference frame dependent. We present an improved formulation of such a transformation and give a novel way to describe exactly by `how much' the `value of the position' has changed that fully encodes all information about the changes, including the `uncertainty' and entanglement. That is an application of the notion of noncommutative values of physical quantities we introduced to understand the reality of quantum physics and beyond. Some implications on fundamental physics will also be discussed.