PIRSA:25050046 Scientific Series Quantum Gravity

DOI10.48660/25050046

Series: Quantum Gravity

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}}
}

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.
 

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