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We examine the possibility that an epoch of inflationary expansion induceshigh-frequency oscillations of Newton's constant, $G$. The effect occursbecause inflation can shift the expectation value of a non-minimally coupled,Brans-Dicke-like field away from the minimum of its effective potential. Atsome time after inflation ends, the field begins to oscillate, resulting inperiodic variations in $G$. We find conditions for which the oscillation energywould be sufficient to close the universe, consistent with all knownconstraints from cosmology and local tests of general relativity.Comment: 30 pages, Penn Preprint UPR-0628T, Wash. U. Preprint WUGRAV 94-10  Four figures available by ftp (read comment at head of file

High-frequency oscillations of Newton’s constant induced by inflation