Instantons in $\sigma$ model and tau functions
Exactly Solvable and Integrable Systems
2019-02-22 v2 Mathematical Physics
math.MP
Abstract
We show that a number of multiple integrals may viewed as tau functions of various integrable hierarchies. The instanton contributions in the two-dimensional O(3) model is an example of such an approach.
Keywords
Cite
@article{arxiv.1611.02248,
title = {Instantons in $\sigma$ model and tau functions},
author = {A. N. Antonov and A. Yu. Orlov},
journal= {arXiv preprint arXiv:1611.02248},
year = {2019}
}