Marina V. Komarova, Ilya S. Kremnev and Mikhail Yu. Nalimov
An instanton for the Kraichnan model with a ‘frozen’ velocity field is found. High-order asymptotics of the quantum-field perturbation expansion for the renormalization constant Z ν are investigated. It is shown that this expansion is convergent, and the radius of convergence is calculated.
THE EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Volume 71, Number 5, 1646, DOI:...