Assuming that all physical systems are ultimately quantum, it is natural to ask how the world “looks like” from the perspective of a quantum reference frame (QRF). Starting from a general notion of symmetry, the authors develop a complete theory for “jumping” between different QRFs, and uncover previously unnoticed degrees of freedom, which are essential for a complete quantum description.
- Esteban Castro-Ruiz
- Ognyan Oreshkov
