Mach's Principle and Higher-Dimensional Dynamics

Details Mach's Principle and Higher-Dimensional Dynamics Mach's Principle and Higher-Dimensional Dynamics

2011-06-29

arxiv.org/abs/1106.6036v3

Annalen Phys.524:63-70,2012

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, accepted for publication in Annalen der Physik; Revised Version: minor improvements

Scientific paper

We briefly discuss the current status of Mach's principle in general relativity and point out that its last vestige, namely, the gravitomagnetic field associated with rotation, has recently been measured for the earth in the GP-B experiment. Furthermore, in his analysis of the foundations of Newtonian mechanics, Mach provided an operational definition for inertial mass and pointed out that time and space are conceptually distinct from their operational definitions by means of masses. Mach recognized that this circumstance is due to the lack of any a priori connection between the inertial mass of a body and its Newtonian state in space and time. One possible way to improve upon this situation in classical physics is to associate mass with an extra dimension. Indeed, Einstein's theory of gravitation can be locally embedded in a Ricci-flat 5D manifold such that the 4D energy-momentum tensor appears to originate from the existence of the extra dimension. An outline of such a 5D Machian extension of Einstein's general relativity is presented.

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