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On Cauchy’s problem in general relativity - II

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Il Nuovo Cimento (1955-1965)

Summary

It is always possible to satisfy the three transverse constraints πmn .n= 0 by taking πmn=δS/δg mn , whereS is any functional of theg mn , invariant under co-ordinate transformations. If furthermore S is invariant under scale transformations, we also haveg mn π mn = 0. The explicit construction of initial data for General Eelativity then reduces to the Lichnerowicz scalar equation, and can be achieved with arbitrary accuracy. This method can be considered as a first step towards a Hamilton-Jacobi formalism for the gravitational field.

Riassunto

È sempre possibile soddisfare le tre costrizioni trasversali πmn,n = π prendendo πmn = δS/δgmn, in cui8 è un qualsiasi funzionale delg mn , invariante per trasformazioni di coordinate. Se inoltreS è invariante per trasformazioni di scala, noi abbiamo ancheg mn π mn = 0. La costruzione esplicita dei dati iniziali della relativita generale si riduce allora all’equazione scalare di Lichnerowicz. Questo metodo puo essere considerate un primo passo verso un formalismo di Hamilton-Jacobi per il campo gravitazionale.

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References

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The author is indebted to the U.S. Educational Foundation in Israel for the award of a Fulbright travel grant.

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Peres, A. On Cauchy’s problem in general relativity - II. Nuovo Cim 26, 53–62 (1962). https://doi.org/10.1007/BF02754342

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  • DOI: https://doi.org/10.1007/BF02754342

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