PIRSA:25060032 Conference

DOI10.48660/25060032

Conference/School: Lee's Fest: Quantum Gravity and the Nature of Time

Alexander, S. (2025). Cosmology, Quantum Gravity and a Constant. Perimeter Institute. https://pirsa.org/25060032

Alexander, Stephon. Cosmology, Quantum Gravity and a Constant. Perimeter Institute, Jun. 02, 2025, https://pirsa.org/25060032 

@misc{ pirsa_PIRSA:25060032,
  doi = {10.48660/25060032},
  url = {https://pirsa.org/25060032},
  author = {Alexander, Stephon},
  keywords = {},
  language = {en},
  title = {Cosmology, Quantum Gravity and a Constant},
  publisher = {Perimeter Institute},
  year = {2025},
  month = {jun},
  note = {PIRSA:25060032 see, \url{https://pirsa.org}}
}

Abstract

Cosmological data is consistent with a positive cosmological constant. In this talk I discuss an approach pioneered by Smolin that uses a non-perturbative exact quantization of gavity with a cosmological constant in the Ashtekar formalism. I discuss follow up work by the Author and his collaborators that address some conceptual and potential physical predictions of this approach. I end with a discussion of Smolin's cosmic natural selection as a predictive mechanism which also had consequences in particular Anthrophic landscape realizations in string theory.

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