Quantum gravity background in next-generation gravitational wave detectors

Creators: Bub, Mathew W.; Chen, Yanbei¹; Du, Yufeng; Li, Dongjun; Zhang, Yiwen; Zurek, Kathryn M.¹

1. California Institute of Technology

Abstract

We study the effects of geontropic vacuum fluctuations in quantum gravity on next-generation terrestrial gravitational wave detectors. If the Verlinde-Zurek (VZ) effect proposed in Verlinde and Zurek [Phys. Lett. B 822, 136663 (2021).], as modeled in Zurek [Phys. Lett. B 826, 136910 (2022); Li et al. Phys. Rev. D 107, 024002 (2023)], appears in the upcoming GQuEST experiment, we show that it will be a large background for astrophysical gravitational wave searches in observatories like Cosmic Explorer and the Einstein Telescope.

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Acknowledgement

We thank James Gardner for providing us with the strain sensitivity data of NEMO, Evan Hall for providing us with the strain sensitivity data of Cosmic Explorer, and Vincent S. H. Lee for sharing his code for making the strain sensitivity plots in Ref. [11]. We are supported by the Heising-Simons Foundation "Observational Signatures of Quantum Gravity" collaboration grant 2021-2817. The work of K. Z. 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 Y. C. and D. L. is also supported by the Simons Foundation (Grant No. 568762), the Brinson Foundation and the National Science Foundation (via Grants No. PHY-2011961 and No. PHY-2011968). M. B. acknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC), [Funding Reference No. CGS D—578032–2023].

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