Cosmology with nonminimal derivative couplings

摘要: Abstract We study a theory which generalizes the nonminimal coupling of matter to gravity by including derivative couplings. This leads several interesting new dynamical phenomena in cosmology. In particular, range parameters inflationary attractors exist is greatly expanded. also numerically integrate field equations and draw phase space model second order approximation. The introduced here may display different epochs, generating non-scale-invariant fluctuation spectrum without need two or more fields. Finally, we comment on bubble arising during first-order transition occuring our model.