  It is shown that dynamical quantum phase transitions observed as
singularities in the Loschmidt rate singularities bear close resemblance to
standard Rabi oscillations known from dynamics of two-level systems. For some
many-body systems this analogy may go even further and the behaviour observed
for e.g. transverse Ising chain can be directly mapped to such simple dynamics.
It is explained why A simple link between Loschmidt echo singularities and
quantum scars is suggested.
