Abstract
We obtain the general solution of Liouville's equation in Robertson-Walker space-times, based on Killing vector constants of the motion and a new time-dependent first integral. For photons the solution is generated by conformai Killing vectors.
Original language | English |
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Pages (from-to) | 1217-1222 |
Number of pages | 6 |
Journal | General Relativity and Gravitation |
Volume | 19 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 1987 |