Cosmological model due to dimensional reduction of higher-dimensional
  massive gravity theory
  We investigate a cosmological model resulting from a dimensional reduction of
the higher-dimensional dRGT massive gravity. By using the Kaluza-Klein
dimensional reduction, we obtain an effective four-dimensional massive gravity
theory with a scalar field. It is found that the resulting theory corresponds
to a combined description of mass-varying massive gravity and quasi-dilaton
massive gravity. By analyzing the cosmological solution, we found that it is
possible to obtain the late-time expansion of the universe due to the graviton
mass. By using a dynamical system approach, we found regions of model
parameters for which the late-time expansion of the universe is a stable fixed
point. Moreover, this also provides a mechanism to stabilize the extra
dimensions.
