Establishment of the Riemannian structure of space-time by classical means
- Univ. of Paderborn (Germany)
Efforts at providing a physical-axiomatic foundation of the space-time structure of the general theory of relativity have led, when based on simple empirical facts about freely falling particles and light signals, in a satisfying manner only to a Weyl space-time. By adding postulates based on quantum theory, however, the usual pseudo-Riemannian space-time can be reached. We present a new classical postulate which provides the same results. It is based upon the notion of the radar distance between freely failing particles and demands the approximate equality of the growth of the radar distance for particle pairs of equal, small initial velocities. We show that given this, a property results, as found in earlier work by the author, that distinguishes between Weyl and Lorentz space-times. The property refers to a special metric and decides whether its metric connection has the given free-fall worldlines as geodesics or not. It consists in the vanishing of the mixed spatiotemporal components g{sub i4} of this metric in suitable coordinates along the worldline of the freely falling observer, as the rest system of which the coordinates are constructed.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 482309
- Journal Information:
- International Journal of Theoretical Physics, Journal Name: International Journal of Theoretical Physics Journal Issue: 8 Vol. 35; ISSN 0020-7748; ISSN IJTPBM
- Country of Publication:
- United States
- Language:
- English
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