Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics

Robert Caldwell, Yanou Cui, Huai-Ke Guo, Vuk Mandic, Alberto Mariotti, Jose Miguel No, Michael J. Ramsey-Musolf, Mairi Sakellariadou, Kuver Sinha, Lian-Tao Wang, Graham White, Yue Zhao, Haipeng An, Chiara Caprini, Sebastien Clesse, James Cline, Giulia Cusin, Ryusuke Jinno, Benoit Laurent, Noam Levi, Kunfeng Lyu, Mario Martinez, Andrew Miller, Diego Redigolo, Claudia Scarlata, Alexander Sevrin, Barmak Shams Es Haghi, Jing Shu, Xavier Siemens, Daniele A. Steer, Raman Sundrum, Carlos Tamarit, David J. Weir, Bartosz Fornal, Ke-Pan Xie, Fengwei Yang, Siyi Zhou

Read on arXiv

arXiv

2203.07972

Date

2022-03-15

Frontier

Cosmic Frontier (CF)

Topical groups

Submitted by

Vuk Mandic

Abstract

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific questions about the Universe. In this white paper, we survey the leading early-Universe mechanisms that may produce a detectable signal -- including inflation, phase transitions, topological defects, as well as primordial black holes -- and highlight the connections to fundamental physics. We review the complementarity with collider searches for new physics, and multimessenger probes of the large-scale structure of the Universe.