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, Ligong Bian, Chiara Caprini, Sebastien Clesse, James M. Cline, Giulia Cusin, Bartosz Fornal, Ryusuke JinnoBenoit Laurent, Noam Levi, Kun-Feng Lyu, Mario Martinez, Andrew L. Miller, Diego Redigolo, Claudia Scarlata, Alexander Sevrin, Barmak Shams Es Haghi, Jing Shu, Xavier Siemens, Danièle A. Steer, Raman Sundrum, Carlos Tamarit, David Weir, Ke-Pan Xie, Feng-Wei Yang, Siyi Zhou

Research output: Contribution to journalReview Articlepeer-review


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.
Original languageEnglish
Article number156
JournalGeneral Relativity and Gravitation
Number of pages61
Publication statusPublished - 30 Nov 2022
MoE publication typeA2 Review article in a scientific journal

Fields of Science

  • 114 Physical sciences
  • Collider and gravitational wave complementarity
  • Dark matter
  • Gravitational wave and EM correlation
  • Inflation
  • Phase transitions
  • Primordial gravitational waves
  • Topological defects

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