Einstein Frame or Jordan Frame?

Author: Faraoni V.   Gunzig E.  

Publisher: Springer Publishing Company

ISSN: 0020-7748

Source: International Journal of Theoretical Physics, Vol.38, Iss.1, 1999-01, pp. : 217-225

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Abstract

Scalar-tensor theories of gravity can be formulated in the Jordan or in the Einstein frame, which are conformally related. The issue of which conformal frame is physical is a contentious one; we provide a straightforward example based on gravitational waves in order to clarify the issue.