Quantum reference frames and the equivalence principle

by Mr. Carlo Cepollaro

University of Vienna

at Quantum optics seminar

Wed, 18 Jun 2025, 16:00
Zoom only

Abstract

Zoom link: https://us02web.zoom.us/j/82479456937?pwd=6GyvRIOaDekyKT6medTK8dcwDErbca.1

Abstract:
The equivalence principle is a cornerstone of general relativity, underpinning the geometric interpretation of gravity and the formulation of physical laws in arbitrary accelerated frames. Historically, the progressive broadening of admissible reference frames - from Galilean inertial frames to Lorentz frames, and ultimately to general relativistic frames - has driven the development of increasingly comprehensive physical theories and deeper insights into the nature of spacetime. However, this progression encounters a fundamental limitation in quantum theory: classical reference frames presuppose well-defined positions and velocities, while quantum systems can exist in superpositions of such states. In this talk, I will discuss how quantum reference frames (QRFs) extend the concept of a reference frame to the quantum domain, allowing the formulation of physical laws relative to systems that themselves obey quantum mechanics. This framework enables a quantum generalization of Einstein’s equivalence principle, potentially offering new insights and predictions at the intersection of quantum theory and gravity. I will also illustrate a thought experiment designed to test this quantum equivalence principle.

Created on 16-06-2025 by Folman, Ron (folman)
Updaded on 16-06-2025 by Folman, Ron (folman)