Li, Dongjun and Lee, Vincent S. H. and Chen, Yanbei and Zurek, Kathryn M. (2022) Interferometer Response to Geontropic Fluctuations. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20220922-220443602
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Abstract
We model vacuum fluctuations in quantum gravity with a scalar field, characterized by a high occupation number, coupled to the metric. The occupation number of the scalar is given by a thermal density matrix, whose form is motivated by fluctuations in the vacuum energy, which have been shown to be conformal near a light-sheet horizon. For the experimental measurement of interest in an interferometer, the size of the energy fluctuations is fixed by the area of a surface bounding the volume of spacetime being interrogated by an interferometer. We compute the interferometer response to these "geontropic" scalar-metric fluctuations, and apply our results to current and future interferometer measurements, such as LIGO and the proposed GQuEST experiment.
| Item Type: | Report or Paper (Discussion Paper) | ||||||||||||||
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| Additional Information: | We thank Temple He, Allic Sivaramakrishnan, and Jordan Wilson-Gerow for discussions and comments on the draft, and Lee McCuller for comments and help with recasting the Holometer bounds. We are supported by the Heising-Simons Foundation “Observational Signatures of Quantum Gravity” collaboration grant 2021- 2817. The work of KZ is also supported by a Simons Investigator award and the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award No. DE-SC0011632. The work of YC and DL is also supported by the Simons Foundation (Award Number 568762), the Brinson Foundation and the National Science Foundation (via grants PHY-2011961 and PHY2011968) | ||||||||||||||
| Group: | Astronomy Department, Walter Burke Institute for Theoretical Physics | ||||||||||||||
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| Record Number: | CaltechAUTHORS:20220922-220443602 | ||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20220922-220443602 | ||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||
| ID Code: | 117117 | ||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||
| Deposited By: | Joy Painter | ||||||||||||||
| Deposited On: | 23 Sep 2022 15:59 | ||||||||||||||
| Last Modified: | 09 Mar 2023 20:57 |
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