Detecting Dark Energy Fluctuations with Gravitational Waves
Journal
Date Issued
2021
Author(s)
Alice Garoffolo
•
Marco Raveri
•
Alessandra Silvestri
•
Gianmassimo Tasinato
•
•
Daniele Bertacca
•
Abstract
Luminosity distance estimates from electromagnetic and gravitational wave
sources are generally different in models of dynamical dark energy and gravity
beyond the standard cosmological scenario. We show that this leaves a unique
imprint on the angular power-spectrum of fluctuations of the luminosity
distance of gravitational-wave observations which tracks inhomogeneities in the
dark energy field. Exploiting the synergy in supernovae and gravitational wave
distance measurements, we build a joint estimator that directly probes dark
energy fluctuations, providing a conclusive evidence for their existence in
case of detection. Moreover, such measurement would also allow to probe the
running of the Planck mass. We discuss experimental requirements to detect
these signals.
Volume
103
Issue
8
Issn Identifier
2470-0010
Rights
open.access
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