Constructing phantom cosmologies from standard scalar field universes.

  title={Constructing phantom cosmologies from standard scalar field universes.},
  author={Luis P. Chimento and Ruth Lazkoz},
  journal={Physical review letters},
  volume={91 21},
We illustrate how form-invariance transformations can be used for constructing phantom cosmologies from standard scalar field universes. First we discuss how to relate two flat Friedmann-Robertson-Walker cosmologies with different barotropic indexes gamma and gamma;. Then we consider the particular case gamma;=-gamma, and we show that, if the matter content is interpreted in terms of self-interacting scalar fields, then the corresponding transformation provides the link between a standard and a… 

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