Yi. Balkarey et al., NONLINEAR STRUCTURES AND THEIR COLLECTIVE EXCITATIONS IN A COHERENT-STATE OF EXCITONS DURING RESONANT PUMPING, JETP letters, 60(1), 1994, pp. 42-46
This letter examines nonlinear structures of a coherent state of Wanni
er-Mott excitons created and sustained by optical pumping. The spectru
m of collective excitations and the stability of the structures are an
alyzed.