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"Extreme fine tuning of the cosmological constant is not needed"

Dr. Qingdi Wang
University of British Columbia


We show that when the bare cosmological constant in the Einstein field equations takes large negative values, the average distance between any two nearby geodesics moving in the spacetime sourced by quantum fields vacuum would gradually increase at a slow accelerating rate due to the weak parametric resonance effect caused by the fluctuations of the quantum vacuum energy density. In this scenario, the extreme fine tuning of the cosmological constant is not needed. This resolves the cosmological constant problem and provides an explanation to the accelerating expansion of the universe.

Friday, December 7, 2018
IQSE Seminar Room, 12:00 Noon
(578 MPHY)

Institute for Quantum Science and Engineering
Texas A&M University

Sandwich lunch to be served at 11:30 a.m.

Host: Dr. William Unruh