  The statistics of wrinkling flame front is invetigated by the quantum filed
theory methods. We dwell on the WKB approximation in the functional integral
which is analogous to the Wyld functional integral in turbulence. The main
contribution to statistics is due to a coupled field-force configuration. This
configuration is related to a kink between metastable exact pole solutions of
the Syvashinsky equation. These kinks are responsible for both the formation of
new cusps and the rapid power-law acceleration of the mean flame-front. The
problem of asymptotic stability of the solutions is discussed.
