PIRSA:25050046

Probing Quantum Features of Gravity in Tabletop Regime and Reassessing the I.I.D. Assumption in Quantum Probability Assignments

Chen, L. (2025). Probing Quantum Features of Gravity in Tabletop Regime and Reassessing the I.I.D. Assumption in Quantum Probability Assignments. Perimeter Institute. https://pirsa.org/25050046

Chen, Lin-Qing. Probing Quantum Features of Gravity in Tabletop Regime and Reassessing the I.I.D. Assumption in Quantum Probability Assignments. Perimeter Institute, May. 30, 2025, https://pirsa.org/25050046 

          @misc{ pirsa_PIRSA:25050046,
            doi = {10.48660/25050046},
            url = {https://pirsa.org/25050046},
            author = {Chen, Lin-Qing},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Probing Quantum Features of Gravity in Tabletop Regime and Reassessing the I.I.D. Assumption in Quantum Probability Assignments},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {may},
            note = {PIRSA:25050046 see, \url{https://pirsa.org}}
          }

Linqing Chen Austrian Academy of Sciences

Talk numberPIRSA:25050046
DOI10.48660/25050046
Collection
Talk Type Scientific Series
Subject

Abstract

Recent advancements in tabletop experiments may offer the first empirical proof that gravity is not classical. In the first part of my talk, I will present two effects that overcome the current limitations of Newton potential phenomenology, involving generic quantum sources of gravity. These effects are derived using a field-basis formulation of linearised gravity, which is particularly suited for describing superposition of macroscopically distinct gravitational field configurations in the low energy regime. This formalism also offers a natural setting for exploring the gauge symmetries. In particular, I will discuss the construction of linearised quantum diffeomorphism transformations by extending the notion of quantum reference frames to quantum fields.