Detection of early-universe gravitational-wave signatures and fundamental physics

Mar 15, 2022
67 pages
Published in:
  • Gen.Rel.Grav. 54 (2022) 12, 156
Contribution to:
  • Published: Nov 30, 2022
e-Print:

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Abstract: (Springer)
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.
Note:
  • contribution to Snowmass 2021; 3 figures, 67 pages
  • Primordial gravitational waves
  • Inflation
  • Topological defects
  • Phase transitions
  • Dark matter
  • Collider and gravitational wave complementarity
  • Gravitational wave and EM correlation
  • defect: topological
  • gravitational radiation: signature
  • black hole: primordial