from Imperial College London offer modern pedagogical reviews of the Wheeler-DeWitt framework and its shortcomings.
Here’s a concise review of the concept and typical content found in a PDF titled “Wave Function of the Universe” (such as the well-known work by J.B. Hartle and S.W. Hawking, or related lecture notes). wave function of the universe pdf
. This is a second-order functional differential equation of the form: cap H hat cap psi equals 0 is the Hamiltonian constraint. Imperial College London Absence of Time wave function of the universe pdf
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