Quantum reference frames for space and space-time

          @misc{ scivideos_PIRSA:21060091,
            doi = {10.48660/21060091},
            url = {https://pirsa.org/21060091},
            author = {Brukner, {\v{C}}aslav},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Quantum reference frames for space and space-time},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2021},
            month = {jun},
            note = {PIRSA:21060091 see, \url{https://scivideos.org/index.php/pirsa/21060091}}
          }
          

Abstract

In physics, a reference frame is an abstract coordinate system that specifies observations within that frame. While quantum states depend on the choice of reference frame, the form of physical laws is assumed to be covariant. Recently, it has been proposed to consider reference frames as physical systems and as such assume that they obey quantum mechanics. In my talk, I will present recent results in the field of "quantum reference frames" (QRF). In particular, I will formulate the covariance of dynamical physical laws with respect to non-relativistic QRF transformations and show how relativistic QRFs can be used to solve a long-standing problem in relativistic quantum information or to address typical quantum gravity scenarios.