Joint Seminars on Cosmology and Gravitation

Speaker: Niayesh Afshordi (Perimeter Institute)
Title: The end of the cosmological constant problem!
Date (JST): Fri, Feb 27, 2009, 13:30 - 15:00
Place: Seminar Room at IPMU Prefab. B
Related File: 9.pdf
Abstract: Cosmological constant problem is arguably the deepest gap in our understanding of modern physics.
I first introduce a modification of Einstein gravity, gravitational aether, which decouples the quantum field theory vacuum from gravity, solving the cosmological constant problem.
I will then show how the formation of stellar-mass black holes could trigger the onset of cosmic acceleration (and dark energy) in the context of this model. The mode can be tested through its effect on big bang ucleosynthesis,cosmological structure formation, and ossible correlations between black hole formation and cosmic acceleration at late times.
Remarks: Joint Seminars on Cosmology and Gravitation