English

Exact quasi-periodic solutions to the MKdV equation

Exactly Solvable and Integrable Systems 2025-08-01 v1 Mathematical Physics Algebraic Geometry math.MP

Abstract

In the present paper, a hierarchy of the mKdV equation is integrated by the methods of algebraic geometry. The mKdV hierarchy in question arises on coadjoint orbits in the loop algebra of sl(2)\mathfrak{sl}(2), and employs a family of hyperelliptic curves as spectral curves. A generic form of the finite-gap solution in any genus is obtained in terms of the \wp-functions, which generalize the Weierstrass \wp-function. Reality conditions for quasi-periodic wave solutions are completely specified. The obtained solutions are illustrated by plots in small genera.

Keywords

Cite

@article{arxiv.2507.23469,
  title  = {Exact quasi-periodic solutions to the MKdV equation},
  author = {Julia Bernatska},
  journal= {arXiv preprint arXiv:2507.23469},
  year   = {2025}
}

Comments

21 pages, 1 figure