| Summary: | The mechanisms of ultrafast switching of ferroelectric polarization are of great interest and importance currently both from the fundamental and from the practical points of view. One such mechanism, harnessing feedback from the resonator field, was recently proposed by Yukalov and Yukalova [Phys. Rev. Research 1, 033136 (2019)10.1103/PhysRevResearch.1.033136]. The Ising model in a transverse field that is used there is the standard to order-disorder ferroelectrics. However, I note that the assumption of a nonzero transverse electric dipole moment associated with a transverse pseudospin, essential for the proposed mechanism, does not hold for the most common order-disorder ferroelectrics mentioned there for reasons of symmetry. Therefore, care should be taken when choosing the material to which the mechanism can be applied.
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