  Shape-phase transition in neutron-rich Cr isotopes around N=40 is
investigated by employing the collective Hamiltonian approach. The inertial
functions for large-amplitude vibration and rotation are evaluated by the local
normal modes along the axial quadrupole collective coordinate using the Skyrme
and pairing energy density functionals. The time-odd components of the mean
fields are fully included in the derived masses. The low-lying spectra obtained
by requantizing the collective Hamiltonian show an excellent agreement with the
recent experimental data. Gradual change from spherical to axially deformed
shapes in between N=34 and 38 is well described.
