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Wheeler-deWitt equation

In theoretical physics, the Wheeler-deWitt equation is an equation that a wave function of the Universe should satisfy in a theory of quantum gravity. An example of such a wave function is the Hartle-Hawking state.

Simply speaking, the WDW equation says

H |\psi\rangle = 0

where H is the total Hamiltonian constraint in quantized general relativity.

In general the Hamiltonian vanishes for a theory with time scaling invariance.

There is also a diffeomorphism constraint .

Last updated: 07-01-2005 04:36:05
Science Fair Project Encyclopedia Contents Page
10-26-2009 08:16:03
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