• DOI:10.1103/PhysRevLett.91.211301
• Corpus ID: 21285224

Constructing phantom cosmologies from standard scalar field universes.

@article{Chimento2003ConstructingPC,
  title={Constructing phantom cosmologies from standard scalar field universes.},
  author={Luis P. Chimento and Ruth Lazkoz},
  journal={Physical review letters},
  year={2003},
  volume={91 21},
  pages={
          211301
        }
}

• L. Chimento, R. Lazkoz
• Published 28 July 2003
• Physics
• Physical review letters

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 phantom cosmology. After that, we illustrate the method by considering models with exponential potentials. Finally, we also show that the mentioned duality persists even if the typical brane-world modifications to the Friedmann equation are considered.