Cosmologies with variable Newton's ``constant''

Details Cosmologies with variable Newton's ``constant'' Cosmologies with variable Newton's ``constant''

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988nuphb.302..645w&link_type=abstract

Nuclear Physics B, Volume 302, Issue 4, p. 645-667.

Physics

Nuclear Physics

134

Scientific paper

We discuss cosmologies where the Planck length is not a fundamental constant but rather evolves with time. The dynamics which should be responsible for today's tiny value of this length scale are governed by the effective potential of a Brans-Dicke type theory. Qualitative properties of this potential depend on the short distance behaviour of the unifying fundamental theory. We discuss criteria for the asymptotic behaviour of realistic cosmologies and show that the role of a possible cosmological constant is quite different from the case of standard cosmology.

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