2 papers
hep-th2025
Summation of power singularities
A. V. Ivanov
In this paper, we investigate an example of summation of non-logarithmic singularities of a specific type in a two-dimensional non-linear sigma model. As a result of the study, we…
math-ph2025
An etude on a renormalization
A. V. Ivanov
In this paper, we study renormalization, that is, the procedure for eliminating singularities, for a special model using both combinatorial techniques in the framework of working w…