  We study the dynamics of electrons in monolayer Molybdenum Disulfide
(MoS$_2$), in the absence as well as presence of a transverse magnetic field.
Considering the initial electronic wave function to be a Gaussian wave packet,
we calculate the time dependent expectation value of position and velocity
operators. In the absence of the magnetic field, the time dependent average
values of position and velocity show damped oscillations dependent on the width
of the wave packet. In the presence of a transverse magnetic field, the wave
packet amplitude shows oscillatory behaviour over short timescales associated
with classical cyclotron orbit, followed by the phenomena of spontaneous
collapse and revival over larger timescales. We relate the timescales of these
effects and our results can be useful for the interpretation of experiments
with trapped ions.
