PIRSA:25120029 Scientific Series Particle Physics

DOI10.48660/25120029

Series: Particle Physics

Wang, L. (2025). Secondary Gravitational Wave as a window to the early universe. Perimeter Institute. https://pirsa.org/25120029

Wang, LianTao. Secondary Gravitational Wave as a window to the early universe. Perimeter Institute, Dec. 09, 2025, https://pirsa.org/25120029 

@misc{ pirsa_PIRSA:25120029,
  doi = {10.48660/25120029},
  url = {https://pirsa.org/25120029},
  author = {Wang, LianTao},
  keywords = {Particle Physics},
  language = {en},
  title = {Secondary Gravitational Wave as a window to the early universe},
  publisher = {Perimeter Institute},
  year = {2025},
  month = {dec},
  note = {PIRSA:25120029 see, \url{https://pirsa.org}}
}

Abstract

Gravitational wave signals provide a unique insight into the dynamics of the early universe. Notably, secondary gravitational waves sourced by curvature perturbations from inflation are a generic feature. I will outline the details of this mechanism and discuss several scenarios where a significant signal may arise.

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