WKB approximation and renormalizability of the Wheeler-DeWitt equation
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We try to solve the Wheeler-DeWitt (WDW) equation in the WKB expansion by using heat-kernel regularization. An approximate wave function of the WDW equation up to terms that contain second-order spatial gradients is given. We also discuss the renormalization group equation for the wave function.
PACS04.60 Quantum theory of gravitation
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