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We establish a bilinear framework for elliptic soliton solutions which are composed by the Lam\'e-type plane wave factors. $\tau$ functions in Hirota's form are derived and vertex operators that generate such $\tau$ functions are presented.…

Exactly Solvable and Integrable Systems · Physics 2022-09-14 Xing Li , Da-jun Zhang

We introduced a fifth-order partial differential equation as a generalization of Hirota-Satsuma coupled with KdV system. This equation is investigated based on tanh method. By applying the suitable independent variable in Hirota-Satsuma…

Pattern Formation and Solitons · Physics 2016-01-29 Ghasem Forozani , Bahram Sohrabi

The Schur function expansion of Sato-Segal-Wilson KP tau-functions is reviewed. The case of tau-functions related to algebraic curves of arbitrary genus is studied in detail. Explicit expressions for the Pl\"ucker coordinate coefficients…

Mathematical Physics · Physics 2013-04-08 V. Enolski , J. Harnad

We consider KP tau function of hypergeometric type $\tau({\bf t},T,{\bf t}^*)$, where the set ${\bf t}$ is the KP higher times and $T,{\bf t}^*$ are sets of parameters. Fixing ${\bf t}^*$, we find that $\tau({\bf t},T,{\bf t}^*)$ is an…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 A. Yu. Orlov

In this paper we construct explicit solutions and calculate the corresponding $\tau$-function to the system of Schlesinger equations describing isomonodromy deformations of $2\times 2$ matrix linear ordinary differential equation whose…

Mathematical Physics · Physics 2007-05-23 A. V. Kitaev , D. A. Korotkin

In this paper, a theory of hyperelliptic functions based on multidimensional sigma functions is developed and explicit formulas for hyperelliptic solutions to the Kadomtsev-Petviashvili equations KP-I and KP-II are obtained. The…

Mathematical Physics · Physics 2025-07-21 Takanori Ayano , Victor M. Buchstaber

A characterization of the Kadomtsev-Petviashvili hierarchy of type C (CKP) in terms of the KP tau-function is given. Namely, we prove that the CKP hierarchy can be identified with the restriction of odd times flows of the KP hierarchy on…

Exactly Solvable and Integrable Systems · Physics 2021-06-09 I. Krichever , A. Zabrodin

In this note we will discuss a potentially interesting extension of some recent results on primitive solutions to completely integrable partial differential equations. We will discuss a family distributions that are holomorphic on the…

Mathematical Physics · Physics 2021-03-09 Patrik V. Nabelek

The Lam\'e function can be used to construct plane wave factors and solutions to the Korteweg-de Vries (KdV) and Kadomtsev-Petviashvili (KP) hierarchy. The solutions are usually called elliptic solitons. In this chapter, first, we review…

Exactly Solvable and Integrable Systems · Physics 2023-08-15 Xing Li , Da-jun Zhang

We introduce a collection of nonlinear integrable partial differential-difference equations that are satisfied by the one-point distribution functions of some classical integrable KPZ models. Moreover, these equations can be regarded as…

Probability · Mathematics 2025-09-23 C. Alexander Rodriguez

In the present paper, we are concerned with the tau function and its connection with the Kadomtsev-Petviashvili (KP) theory for the massive Thirring (MT) model. First, we bilinearize the massive Thirring model under both the vanishing and…

Exactly Solvable and Integrable Systems · Physics 2021-11-11 Junchao Chen , Bao-Feng Feng

Using the matrix-resolvent method and a formula of the second-named author on the $n$-point function for a KP tau-function, we show that the tau-function of an arbitrary solution to the Toda lattice hierarchy is a KP tau-function. We then…

Exactly Solvable and Integrable Systems · Physics 2025-08-12 Di Yang , Jian Zhou

The main purpose of the paper is to provide a survey of our recent studies on soliton solutions of the Kadomtsev-Petviashvili (KP) equation. The classification is based on the far-field patterns of the solutions which consist of a finite…

Exactly Solvable and Integrable Systems · Physics 2015-05-18 Yuji Kodama

We show that the discrete Kadomtsev-Petviashvili (KP) equation with sources obtained recently by the "source generalization" method can be incorporated into the squared eigenfunction symmetry extension procedure. Moreover, using the known…

Exactly Solvable and Integrable Systems · Physics 2021-07-02 Adam Doliwa , Runliang Lin

Kadomtsev-Petviashvili (KP) equation, who can describe different models in fluids and plasmas, has drawn investigation for its solitonic solutions with various methods. In this paper, we focus on the periodic parabola solitons for the (2+1)…

Exactly Solvable and Integrable Systems · Physics 2018-12-14 Yingyou Ma , Zhiqiang Chen , Xin Yu

The degeneration of the hyperelliptic sigma function is studied. We use the Sato Grassmannian for this purpose. A simple decomposition of a rational function gives a decomposition of Pl\"ucker coordinates of a frame of the Sato…

Exactly Solvable and Integrable Systems · Physics 2020-03-06 Julia Bernatska , Victor Enolski , Atsushi Nakayashiki

In this paper we continue to study the Reidemeister zeta function. We prove P\'olya -- Carlson dichotomy between rationality and a natural boundary for analytic behavior of the Reidemeister zeta function for a large class of automorphisms…

Group Theory · Mathematics 2019-06-25 Alexander Fel'shtyn , Malwina Zietek

We report complex PT-symmetric multi-soliton solutions to the Korteweg de-Vries equation that asymptotically contain one-soliton solutions, with each of them possessing the same amount of finite real energy. We demonstrate how these…

Exactly Solvable and Integrable Systems · Physics 2016-09-08 Francisco Correa , Andreas Fring

In this paper, a probabilistic representation of the tau functions of KP (Kadomtsev-Petviashvili) solitons in terms of stochastic areas will be presented.

Probability · Mathematics 2014-02-26 Hidemi Aihara , Jiro Akahori , Hiroko Fujii , Yasuhumi Nitta

Partly inspired by Sato's theory of the Kadomtsev-Petviashvili (KP) hierarchy, we start with a quite general hierarchy of linear ordinary differential equations in a space of matrices and derive from it a matrix Riccati hierarchy. The…

Mathematical Physics · Physics 2009-11-13 Aristophanes Dimakis , Folkert Muller-Hoissen