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# The Boundedness of Euclidean Gravity and the Wavefunction of the Universe

@inproceedings{Sarangi2008TheBO, title={The Boundedness of Euclidean Gravity and the Wavefunction of the Universe}, author={Suchismita Sarangi and S H Tye}, year={2008} }

- Published 2008

When the semi-positive cosmological constant is dynamical, the naive Euclidean Einstein action is unbounded from below and the Hartle-Hawking wavefunction of the universe is not normalizable. With the inclusion of back-reaction (a crucial point), the presence of the metric perturbative modes (as well as matter fields) as the environment (that is, to be integrated or traced out) introduces a correction term that provides a bound to the Euclidean action. So the improved wavefunction is… CONTINUE READING