Jun 2–6, 2025
Perimeter Institute for Theoretical Physics
America/Toronto timezone

Cosmology, Quantum Gravity and a Constant

Jun 2, 2025, 1:00 p.m.
1h
PI/1-100 - Theatre (Perimeter Institute for Theoretical Physics)

PI/1-100 - Theatre

Perimeter Institute for Theoretical Physics

190
Keynote

Speaker

Stephon Alexander (Brown University)

Description

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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