  Dynamical many-body freezing occurs in periodic transverse field-driven
integrable quantum spin systems. Under freezing conditions, quantum dynamics
causes practically infinite hysteresis in the drive response, maintaining its
starting value. We find similar resonant freezing in the Lipkin-Meshkov-Glick
(LMG) model. In the LMG, the freezing conditions in the driving field
suppresses the heating postulated by the eigenstate thermalization hypothesis
(ETH) by inducing dynamical many-body localization, or DMBL. This is in
contrast to Many Body Localization (MBL), which requires disorder to suppress
ETH. DMBL has been validated by the inverse participation ratio (IPR) of the
quasistationary Floquet modes. Similarly to the TFIM, the LMG exhibits
high-frequency localization only at freezing points. IPR localization in the
LMG deteriorates with an inverse system size law at lower frequencies, which
indicates heating to infinite temperature. Furthermore, adiabatically
increasing frequency and amplitude from low values raises the Floquet state IPR
in the LMG from nearly zero to unity, indicating a phase crossover. This
occurrence enables a future technique to construct an MBL engine in clean
systems that can be cycled by adjusting drive parameters only.
