Remember Faraday’s lines? The lines that carry the electric force and that, in Faraday’s vision, fill space? The lines from which the concept of “field” originates? Well, the closed lines that appear in the solutions of the Wheeler-DeWitt equation are Faraday lines of the gravitational field. But two new ingredients are now added to Faraday’s ideas. The first is that we are dealing with quantum theory. In quantum theory, everything is discrete. This implies that the infinitely fine, continuous spiderweb of Faraday’s lines now becomes similar to a real spiderweb, with a finite number of
...more
