arXiv:2608.25647 · S. Li · lishangshuai.com
τShangshuai Li
Integrable systems · Mathematical physics

Shangshuai Li

Lecturer, Ningbo University JSPS Fellow, Nagoya University

Abstract. My research concerns the algebraic and geometric structures of integrable systems and their connections with mathematical physics. I focus on Sato theory, Cauchy matrix methods, (anti-)self-dual Yang–Mills equations, and exact soliton solutions.

KeywordsSato theoryCauchy matrix approachdirect linearization(anti-)self-dual Yang–MillsWard conjecturesolitons & resonances

Citations
153
h-index
7
i10-index
6
Publications
15
Citations & indices: Google Scholar, 11 Oct 2026 · ResearchGate: 175 citations, 1,230 reads.
u = 2(log τ)xx
Pointer: x → t, y → k
Fig. 1. A line soliton of the KP equation drawn as a contour map of u = 2(log τ)xx, computed live from τ = eθ₁ + eθ₂ + eθ₃, θi = kix + ki2y + ki3t.
§1

Structures, methods & solutions

Three connected themes: how lower-dimensional integrable hierarchies sit inside the (anti-)self-dual Yang–Mills equations, the constructive Cauchy-matrix machinery that produces their solutions, and the soliton structures that result.

01Dimensional reductions · Ward conjecture

Yang–Mills & integrable hierarchies

I study the connections between (anti-)self-dual Yang–Mills equations and lower-dimensional integrable hierarchies. Current work includes Sato-theoretic constructions, dimensional reductions, and examples related to the Ward conjecture.

Key paperSato-theoretic construction of the ASDYM hierarchy
02Constructive methods · Exact solutions

Cauchy matrices & direct linearization

Cauchy matrix structures and direct linearization provide constructive approaches to Yang–Mills equations and related integrable systems. I am interested in the algebraic structures underlying these methods and the exact solutions they produce.

Key paperDirect linearization of the SU(2) ASDYM equation
03Wess–Zumino–Witten models

Solitons & resonance structures

I investigate exact soliton solutions and resonance phenomena in four-dimensional Wess–Zumino–Witten models. Topics include multiple-pole solutions, V-shape solitons, and the relationship between Cauchy matrix methods and binary Darboux transformations.

Key paperSoliton resonances in the WZW model
§3

Publications

Journal articles, preprints and proceedings, newest first. Citation counts from Google Scholar.

20263 papers
ArticleAppl. Math. Lett. 172, 109726 (2026)

The KdV hierarchy: Cauchy matrix approach

Zichen Huang, Shangshuai Li, Da-jun Zhang

Applied Mathematics Letters

Shows how the entire Korteweg–de Vries hierarchy and its solutions can be formulated in the Cauchy matrix approach, extendable to other integrable equations.

20254 papers
20244 papers
ArticleTheor. Math. Phys. 221(3), 2049–2061 (2024)

On the extended 2-dimensional Toda lattice models

Conghan Wang, Shangshuai Li, Da-jun Zhang

Theoretical and Mathematical Physics

Studies an extended 2D Toda lattice via Cauchy matrices, viewing it as a negative-order member of the discrete KP hierarchy and bilinearizing it with one τ-function.

20231 paper
20222 papers
20211 paper
ArticleJ. Phys. A: Math. Theor. 54(7), 075201 (2021)

Symmetric discrete AKP and BKP equations

Shangshuai Li, Frank W. Nijhoff, Ying-ying Sun, Da-jun Zhang

Journal of Physics A: Mathematical and Theoretical

Shows that the discrete BKP equation is a combination of the discrete AKP equation and its reflections for symmetric τ-functions, yielding a discrete BKP equation with elliptic coefficients.

No publication matches this filter.

§4

Talks & activities

Invited and contributed talks, with slides where available, and workshops co-organized.

27–28Aug 2026
Co-organizer

Integrability, Self-Duality, and Twistor Theory

Nagoya University, Nagoya, Japan
with Masashi Hamanaka and Shintaro Yanagida

§5

A world line

Education and appointments drawn as a spacetime diagram — time runs upward, places run sideways (not to scale). Hover an event to find it in the list.

Appointments & visits

  • 2025–present

    Lecturerappointment

    Ningbo University · Ningbo, China
  • 2025–present

    JSPS Fellowappointment

    Nagoya University · Nagoya, Japan
  • 2024–2025

    Visiting Research Fellowvisit

    Waseda University · Tokyo, Japan
  • 2019

    Exchange Studentvisit

    La Trobe University · Victoria, Australia
    Host: Peter van der Kamp

Education

  • 2019–2025

    Doctor of Scienceeducation

    Shanghai University · Shanghai, China
    Advisor: Da-jun Zhang · Thesis: Direct method to the self-dual Yang-Mills equation
  • 2015–2019

    Bachelor of Scienceeducation

    Shanghai University · Shanghai, China
§6

Co-authors in orbit

Computed from the publication list: the closer the orbit, the more joint papers. Hover a name to light up the shared work.

  • Da-jun Zhang15 papers
  • Alemu Yilma Tefera2 papers
  • Changzheng Qu2 papers
  • Ken-ichi Maruno2 papers
  • Conghan Wang1 paper
  • Frank W. Nijhoff1 paper
  • Masashi Hamanaka1 paper
  • Shan-Chi Huang1 paper
  • Shuzhi Liu1 paper
  • Taisei Wakamatsu1 paper
  • Xiangxuan Yi1 paper
  • Ying-ying Sun1 paper
  • Zhihao Shi1 paper
  • Zichen Huang1 paper

14 co-authors across 15 papers.

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