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6 papers

math.AP2026

Nonradial stable solutions near the Joseph--Lundgren threshold

Shibing Chen, Yong Liu, Juncheng Wei +1

We study positive stable solutions of the supercritical Lane--Emden equation in the first Joseph--Lundgren interval. For a family of dimensions, we construct nonradial stable entir…

math.AP2026

Nondegeneracy and Morse Index of Ginzburg--Landau Vortices

Manuel del Pino, Yong Liu, Monica Musso +2

We prove that the standard degree-two and degree-three vortex solutions of the Ginzburg-Landau equation are nondegenerate. Their Morse indices are also computed. The proof relies o…

math.AP2026

On Sirakov's equal-frequency uniqueness conjecture

Hong-Ge Chen, Yong Liu, Juncheng Wei +1

The authors prove that the equal-frequency two-component cubic Schrödinger system in two and three dimensions has exactly one positive solution (up to simultaneous translation), co…

math.AP2026

Symmetry breaking for the complex sine-Gordon equation

Shibing Chen, Changfeng Gui, Yong Liu +2

We consider the existence of vortex solutions to the complex sine-Gordon II (CSG2) equation, which can be viewed as an analogy of the Ginzburg-Landau (GL) equation. Using the nontr…

math.AP2025

Stability of Solitary Capillary-Gravity Water Waves in Three Dimensions

Changfeng Gui, Shanfa Lai, Yong Liu +2

This paper establishes the conditional orbital stability of fully localized solitary waves for the three-dimensional capillary-gravity water wave problem in finite depth under stro…

math.AP2025

From KP-I Lump Solution to Travelling wave of 3D Gravity Capillary Water wave problem

Changfeng Gui, Shanfa Lai, Yong Liu +2

In this paper, we study the three-dimensional gravity-capillary water wave problem involving an irrotational, perfect fluid with gravity and surface tension. We focus on steady wav…