Evidencing quantum gravity with thermodynamical observables
- Author(s)
- Thomas Strasser, Marios Christodoulou, Richard Howl, Časlav Brukner
- Abstract
Proposed experiments for obtaining empirical evidence for a quantum description of gravity in a tabletop setting focus on detecting quantum information signatures, such as entanglement or non-Gaussianity production, in gravitationally interacting quantum systems. Here, we explore an alternative approach where the quantization of gravity could be inferred through measurements of macroscopic, thermodynamical quantities, without the need for addressability of individual quantum systems. To demonstrate the idea, we take as a case study a gravitationally self-interacting Bose gas and consider its heat capacity. We find a clear-cut distinction between the predictions of a classical gravitational interaction and a quantum gravitational interaction in the heat capacity of the Bose gas.
- Organisation(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW), University of London
- Journal
- Physical Review Research
- Volume
- 7
- No. of pages
- 7
- ISSN
- 2643-1564
- DOI
- https://doi.org/10.48550/arXiv.2412.17460
- Publication date
- 12-2025
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103028 Theory of relativity
- ASJC Scopus subject areas
- General Physics and Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/2b94ef71-e10f-4631-ba91-5a21962e213e