Particles production in expanding color flux tube

This article generalizes Schwinger's mechanism for particles production in the time dependent field volume in quasi static approximation. Solution of DGLAP equations in double leading log approximation for low x gluon distribution function was used to derive the new formula for initial chromofield energy density. This initial chromofield energy is distributed among color neutral clusters or strings. This strings are stretched by receding nucleus. From the proposed mechanism of string fragmentation or color field decay the new formula for the rapidity spectrum of produced partons was derived