Convergence of perturbation series for renormalization constants in Kraichnan model with "frozen" velocity field
Instanton was found for Kraichnan model with 'frozen' velocity field. Large order asymptotic of quantum-field perturbation expansion for renormalization constant $Z_ν$ was investigated. It was shown that this expansion is convergent one. The radius of convergence was calculated.
cond-mat.stat-mech↗