Antiferroelectric phase transition and nonlinear polarization structure in the thermal gas of uninverted two-level molecules

摘要

The nonlinear stationary solution of the Bloch kinetic equations with Lorentz correction to the local electric field for the thermal gas of two-level molecules is found. This solution shows that radiative coupling between high-frequency molecular dipoles can provide the second-order phase transition to the antiferroelectric state of coherent gaseous crystal.