Interacting fluids generating identical, dual and phantom cosmologies
arXiv:gr-qc/0503049 · doi:10.1016/j.physletb.2005.11.027
Abstract
We find the group of symmetry transformations generated by interacting fluids in spatially flat Friedmann-Robertson-Walker (FRW) spacetime which links cosmologies with the same scale factor {\it (identity)} or with scale factors and {\it (duality)}. There exists a duality between contracting and superaccelerated expanding scenarios associated with {\it (phantom)} cosmologies. We investigate the action of this symmetry group on self-interacting minimally(conformally) coupled quintessence and -essence cosmologies.
5 pages, revised version accepted for publication in PLB
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