2 papers
gr-qc2000
Self-similar perfect fluids
J. Carot, A. M. Sintes
Space-times admitting an -parameter Lie group of homotheties are studied for devoting a special attention to those representing perfect fluid solutions to Einstein's fie…
gr-qc2000
Perfect fluid space-times admitting a 3-dimensional conformal group acting on null orbits
A. M. Sintes, J. Carot
Space-times admitting a 3-dimensional Lie group of conformal motions acting on null orbits are studied. Coordinate expressions for the metric and the conformal Killing vector…