@article{c8eecd8bf49f4ba892e843ad35d7aaa3,
title = "Gravitational waves from kinetic preheating",
abstract = "We study gravitational wave production during kinetic preheating after inflation with a focus on scenarios that arise in α-attractor models where a scalar dilatonlike inflaton is kinetically coupled to a second scalar field. We present high-resolution lattice simulations of three α-attractor models for a range of parameters to probe regions where preheating is efficient. We find that preheating in these models can be extremely violent, resulting in gravitational wave energy densities that can be constrained by cosmic microwave background measurements of the effective number of relativistic species, Neff.",
author = "Peter Adshead and Giblin, {John T.} and Avery Tishue",
note = "We thank Mustafa Amin and Zachary Weiner for early conversations regarding kinetic couplings. We thank Reid Pfaltzgraff-Carlson for early collaboration on this project. P.\u2009A. and A.\u2009J.\u2009T. are supported in part by the United States Department of Energy (No. DE-SC0015655). J.\u2009T.\u2009G. is supported in part by the National Science Foundation, (No. PHY-2309919). The authors gratefully acknowledge support from the Simons Center for Geometry and Physics, Stony Brook University at which some of the research for this paper was performed. P.\u2009A. and J.\u2009T.\u2009G. thank the Yukawa Institute for Theoretical Physics at Kyoto University, where some of this work was completed during the YITP-T-23-02 on \u201CCosmology and Gravity 2024.\u201D Simulations were performed using the Ohio supercomputer center as well as on hardware provided by the National Science Foundation, Kenyon College.",
year = "2024",
month = aug,
day = "15",
doi = "10.1103/PhysRevD.110.043536",
language = "English (US)",
volume = "110",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "4",
}