Homothetic motions and perfect fluid cosmologies

Details Homothetic motions and perfect fluid cosmologies Homothetic motions and perfect fluid cosmologies

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975phla...50..429m&link_type=abstract

Physics Letters A, Volume 50, Issue 6, p. 429-430.

Physics

13

Scientific paper

A theorem on homothetic (self-similar) motions in spacetimes with a
perfect fluid is derived. The main result is that a perfect fluid
cosmological model cannot have a non-trivial homothetic motion
orthogonal to the fluid 4-velocity vector.

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