ON THE POSSIBILITY OF COHERENTLY STIMULATED RECOMBINATION AND COSMOLOGICAL STRUCTURE GENERATION - RECOMBINATION INSTABILITY

Possible instabilities during cosmological recombination may produce a n epoch of nonlinear density growth and fractal-like structural patter ns out to the horizon scale at that epoch (approximate to 200 Mpc toda y). With this motivation, we examine the consequences of the change in effective radiative recombination reaction rate coefficients produced by intense stimulated emission. The proton-electron recombination is considered as a natural laser, leading to the Formation of spatially n onuniform distributions of neutral matter earlier than the recombinati on epoch.