Content
(20.05.) Covariance of physical laws in Quantum Reference Frames and the extension of the Equivalence Principle
Flaminia Giacomini (Perimeter Inst.)
20.05.2021 at 16:15
In physics, every observation is made with respect to a frame of reference. Although reference frames are usually not considered as degrees of freedom, in all practical situations it is a physical system which constitutes a reference frame. Can a quantum system be considered as a reference frame and, if so, which description would it give of the world? In this talk, I will introduce a method to associate a “quantum reference frame” to a quantum systems and a transformation to change to a different quantum reference frame. I will then show that entanglement and superposition are quantum reference frames dependent features even in Galilean quantum theory, and that the quantum reference frame transformation leads to a generalisation of the notion of covariance of dynamical physical laws. Finally, I will show that the notion of quantum reference frames can help us formulate an extension of the weak equivalence principle and the Einstein equivalence principle.
Arnold Sommerfeld Center
Theresienstrasse 37
Room 348
via ZOOM