Projective symmetry in FRW spacetimes

Details Projective symmetry in FRW spacetimes Projective symmetry in FRW spacetimes

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cqgra..17.4637h&link_type=abstract

Classical and Quantum Gravity, Volume 17, Issue 22, pp. 4637-4644 (2000).

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Scientific paper

This paper presents a general discussion of projective symmetry in FRW spacetimes. It is shown that there is at most one proper projective vector field admitted in the sense that any other projective vector field is a linear combination of the original and a homothetic vector field. The situation is, essentially, solved completely for the FRW models with k = +/-1 and up to quadratures in the case k = 0.

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