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arXiv:0910.2073v1 THE GROUP ASPECT IN THE PHYSICAL
 

Summary: arXiv:0910.2073v1
[grqc]
12
Oct
2009
THE GROUP ASPECT IN THE PHYSICAL
INTERPRETATION OF GENERAL RELATIVITY THEORY
SALVATORE ANTOCI AND DIERCK-EKKEHARD LIEBSCHER
When, at the end of the year 1915, both Einstein and Hilbert arrived at what
were named the eld equations of general relativity, both of them thought that their
fundamental achievement entailed, inter alia, the realisation of a theory of gravita-
tion whose underlying group was the group of general coordinate transformations.
This group theoretical property was believed by Einstein to be a relevant one from
a physical standpoint, because the general coordinates allowed to introduce refer-
ence frames not limited to the inertial reference frames that can be associated with
the Minkowski coordinate systems, whose transformation group was perceived to
be restricted to the Poincare group.
Two years later, however, Kretschmann published a paper in which the physical
relevance of the group theoretical achievement in the general relativity of 1915
was denied. For Kretschmann, since any theory, whatever its physical content,

  

Source: Antoci, Salvatore - Dipartimento di Fisica, Universita' di Pavia

 

Collections: Physics