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Published August 10, 2017 | Published + Submitted
Journal Article Open

Gravitational waves from SU(N) glueball dark matter

Abstract

A hidden sector with pure non-abelian gauge symmetry is an elegant and just about the simplest model of dark matter. In this model the dark matter candidate is the lightest bound state made of the confined gauge fields, the dark glueball. In spite of its simplicity, the model has been shown to have several interesting non-standard implications in cosmology. In this work, we explore the gravitational waves from binary boson stars made of self-gravitating dark glueball fields as a natural and important consequence. We derive the dark SU(N) star mass and radius as functions of the only two fundamental parameters in the model, the glueball mass m and the number of colors N, and identify the regions that could be probed by the LIGO and future gravitational wave observatories.

Additional Information

© 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 2 November 2016, Revised 30 April 2017, Accepted 25 May 2017, Available online 30 May 2017. We would like to thank John Terning and Enrico Rinaldi for discussions. The work of AS is supported in part by the DOE Grant No. DE-AC-02-98CH10886. This work of YZ is supported by the DOE Grant No. DE-SC0010143. Y.Z. acknowledges the hospitality from the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1066293.

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Published - 1-s2.0-S0370269317304409-main.pdf

Submitted - 1610.06931.pdf

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