Simple scalar field cosmological models are considered describing gravity assisted crossing of the phantom divide line. This crossing or (de)-phantomization characterized by the change of the sign of the kinetic term of the scalar field is smooth and driven dynamically by the Einstein equations. Different cosmological scenarios, including the phantom phase of matter are sketched.
Alexander A. Andrianov, Francesco Cannata, Alexander Y. Kamenshchik (2005). SMOOTH DYNAMICAL CROSSING OF THE PHANTOM DIVIDE LINE OF A SCALAR FIELD IN SIMPLE COSMOLOGICAL MODELS. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72, 043531-043531 [10.1103/PhysRevD.72.043531].
SMOOTH DYNAMICAL CROSSING OF THE PHANTOM DIVIDE LINE OF A SCALAR FIELD IN SIMPLE COSMOLOGICAL MODELS.
KAMENCHTCHIK, ALEXANDR
2005
Abstract
Simple scalar field cosmological models are considered describing gravity assisted crossing of the phantom divide line. This crossing or (de)-phantomization characterized by the change of the sign of the kinetic term of the scalar field is smooth and driven dynamically by the Einstein equations. Different cosmological scenarios, including the phantom phase of matter are sketched.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
