WebJan 14, 2004 · 1. The WDW equation may be viewed as a kind of schrodinger equation for space, giving it's quantum "evolution" with respect to some "time" parameter. However, unlike in the classical case, different choices of time parameter produce inequivalent theories. The issue then of how a time parameter should be chosen is known as the … Web1 day ago · very difficult to obtain the physical solutions from the Wheeler-Dewitt equation in a general setting. Even in the mini-superspace setting of symmetry reduced models, such as a homo-geneous and isotropic cosmological spacetime, where the relevant Wheeler-Dewitt equation can be exactly solved, physical solutions encounter singularities.

Discrete Wheeler-DeWitt Equation - University of California, …

The Wheeler–DeWitt equation for theoretical physics and applied mathematics, is a field equation attributed to John Archibald Wheeler and Bryce DeWitt. The equation attempts to mathematically combine the ideas of quantum mechanics and general relativity, a step towards a theory of quantum gravity. In … See more All defined and understood descriptions of string/M-theory deal with fixed asymptotic conditions on the background spacetime. At infinity, the "right" choice of the time coordinate "t" is determined (because the space-time is … See more In canonical gravity, spacetime is foliated into spacelike submanifolds. The three-metric (i.e., metric on the hypersurface) is $${\displaystyle \gamma _{ij}}$$ and given by In that equation the … See more • ADM formalism • Diffeomorphism constraint • Euclidean quantum gravity See more The Wheeler–DeWitt equation is a functional differential equation. It is ill-defined in the general case, but very important in theoretical physics, especially in quantum gravity. It is a functional differential equation on the space of three dimensional spatial … See more Webequation”, while DeWitt called it the “Wheeler equa-tion”, or ”that damn equation”, without hiding his un-happiness with it it. For the rest of the world it is the Wheeler-DeWitt, or … how to remove lipstick from white fabric

The Wheeler-DeWitt Equation Beyond the Cosmological Horizon ...

WebSuperfluid vacuum theory. Experiments. v. t. e. In physics, canonical quantum gravity is an attempt to quantize the canonical formulation of general relativity (or canonical gravity ). It is a Hamiltonian formulation of … WebEinstein's equations are revealed as geodesic equations in the manifold of 3-geometries, modified by the presence of a "force term." The classical phenomenon of gravitational collapse shows that the force term is not powerful enough to prevent the trajectory of space-time from running into the frontier. ... Bryce S. DeWitt Phys. Rev. 160, 1113 ... WebDec 15, 2009 · As we saw in chapter 2, not all of the degrees of freedom that determine the metric in general relativity have physical significance; many are ‘pure gauge’, describing … how to remove liquid bandage from clothes