info:eu-repo/semantics/article
Interacting fluids generating identical, dual and phantom cosmologies
Fecha
2006-02Registro en:
Chimento, Luis Pascual; Interacting fluids generating identical, dual and phantom cosmologies; Elsevier Science; Physics Letters B; 633; 1; 2-2006; 9-13
0370-2693
CONICET Digital
CONICET
Autor
Chimento, Luis Pascual
Resumen
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 (identity) or with scale factors a and a-1 (duality). There exists a duality between contracting and superaccelerated expanding scenarios associated with (phantom) cosmologies. We investigate the action of this symmetry group on self-interacting minimally (conformally) coupled quintessence and k-essence cosmologies. © 2005 Elsevier B.V. All rights reserved.