@article{5c95cb28f14042ee8ada6cfe7f49ed29,
title = "Constraining early dark energy with gravitational waves before recombination",
abstract = "We show that the nonperturbative decay of ultralight scalars into Abelian gauge bosons, recently proposed as a possible solution to the Hubble tension, produces a stochastic background of gravitational waves which is constrained by the cosmic microwave background. We simulate the full nonlinear dynamics of resonant dark photon production and the associated gravitational-wave production, finding the signals to exceed constraints for the entire parameter space we consider. Our findings suggest that gravitational-wave production from the decay of early dark energy may provide a unique probe of these models. ",
author = "Weiner, {Zachary J.} and Peter Adshead and Giblin, {John T.}",
note = "Funding Information: We gratefully acknowledge Tom Clarke, Ed Copeland, and Adam Moss for sharing the data from Ref. , and we thank Tristan Smith for useful discussions. The work of P. A. was supported in part by NASA Astrophysics Theory Grant No. NNX17AG48G. J. T. G. is supported by the National Science Foundation Grant No. PHY-1719652. Z. J. W. is supported in part by the United States Department of Energy Computational Science Graduate Fellowship, provided under Grant No. DE-FG02-97ER25308. This work used the Extreme Science and Engineering Discovery Environment (XSEDE) , which is supported by National Science Foundation Grant No. ACI-1548562; simulations were run on the Comet cluster at the San Diego Supercomputer Center through allocation TG-PHY180049. This work made use of the Illinois Campus Cluster, a computing resource that is operated by the Illinois Campus Cluster Program (ICCP) in conjunction with the National Center for Supercomputing Applications (NCSA) and which is supported by funds from the University of Illinois at Urbana-Champaign. Simulations in this work were implemented with pystella, which is available at and makes use of the python packages p y o pen cl , l oo.py , mpi4py , mpi4py-fft , n um p y , and s ci p y . Publisher Copyright: {\textcopyright} 2021 American Physical Society. ",
year = "2021",
month = jan,
day = "12",
doi = "10.1103/PhysRevD.103.L021301",
language = "English (US)",
volume = "103",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "2",
}