Cosmic Acceleration as a Quantum Effect in Bohmian Quantum Gravity

Explore a thought-provoking talk on Bohmian quantum gravity and its implications for cosmic acceleration. Delve into the innovative approach of non-classical geometrodynamics in the ADM formalism, which offers a solution to the problem of time in quantum gravity. Discover how this theory introduces novel features compared to classical general relativity, including singularity avoidance and the potential for accelerated expansion as a quantum effect. Examine a simplified model of quantum gravity using a mini-superspace description of an isotropic and homogeneous universe with dust. Learn about the modified Friedmann equations for the scale factor and their dependence on the wave function. Investigate how specific wave functions can lead to periods of accelerated expansion that align with observations of our universe's evolution, without the need for a cosmological constant. This talk, presented by Ward Struyve from KU Leuven as part of the Foundations of Physics @Harvard Seminar Series, offers a fascinating perspective on cosmic acceleration and its potential quantum origins.