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This is the first of a series of papers in preparation in which we study the Hamiltonian perturbed contact instantons with Legendrian boundary condition and its applications. In this paper, we prove that the asymptotic charge of contact…

Symplectic Geometry · Mathematics 2021-11-05 Yong-Geun Oh

The purposes of the present paper are two-fold. Firstly we further develop the interplay between the contact Hamiltonian geometry and the geometric analysis of Hamiltonian-perturbed contact instantons with the Legendrian boundary condition,…

Symplectic Geometry · Mathematics 2024-10-02 Yong-Geun Oh

In Part I, we establish nonlinear ellipticity of the equation of contact instantons with Legendrian boundary condition on punctured Riemann surfaces by proving the a priori elliptic coercive estimates for the contact instantons with…

Symplectic Geometry · Mathematics 2023-01-18 Yong-Geun Oh , Seungook Yu

In [OW2,OW3], the authors studied the nonlinear elliptic system $$ \overline{\partial}^\pi w = 0, \, d(w^*\lambda \circ j) = 0 $$ without involving symplectization for each given contact triad $(Q,\lambda, J)$, and established the a priori…

Symplectic Geometry · Mathematics 2022-11-01 Yong-Geun Oh

In the present paper, we develop the Floer-style elliptic Morse theory for the Hamiltonian-perturbed contact action functional attached to the Legendrian links. Motivated by the present authors' construction [OY2] of the a perturbed action…

Symplectic Geometry · Mathematics 2023-12-15 Yong-Geun Oh , Seungook Yu

In this article, we first establish the Fredholm theory for the bordered contact instantons defined on the punctured Riemann surfaces with prescribed asymptotic condition near the boundary punctures. We then prove the generic mapping…

Symplectic Geometry · Mathematics 2023-09-04 Yong-Geun Oh

In the present article, we develop the analysis of the following nonlinear elliptic system of equations $$ \bar\partial^\pi w = 0, \, d(w^*\lambda \circ j) = 0 $$ first introduced by Hofer, associated to each given contact triad…

Symplectic Geometry · Mathematics 2017-07-24 Yong-Geun Oh , Rui Wang

Consider a linear autonomous Hamiltonian system with a time periodic bound state solution. In this paper we study the structural instability of this bound state ^M relative to time almost periodic perturbations which are small, localized…

Pattern Formation and Solitons · Physics 2009-09-25 Eduard Kirr , Michael I. Weinstein

By means of topological methods, we provide new results on the existence, non-existence, localization and multiplicity of nontrivial solutions for systems of perturbed Hammerstein integral equations. In order to illustrate our theoretical…

Classical Analysis and ODEs · Mathematics 2016-08-30 Filomena Cianciaruso , Gennaro Infante , Paolamaria Pietramala

The introduction of the infinite boundary terms and the pairwise interactions [J. Chem. Theory Comput., 10, 5254, (2014)] enables a physically intuitive approach for deriving electrostatic energy and pressure for both neutral and…

Computational Physics · Physics 2026-03-03 Yihao Zhao , Zhonghan Hu

Motivated by the problem of global stability of thermodynamical equilibria in non-equilibrium thermodynamics formulated in a recent paper [12], we introduce some mechanisms for constructing semi-infinite orbits of contact Hamiltonian…

Dynamical Systems · Mathematics 2022-08-31 Liang Jin , Jun Yan , Kai Zhao

In this paper, we first provide precise tensorial formulae for the asymptotic operators of contact instantons $w:\dot \Sigma \to Q$ and of pseudoholomorphic curves $u:(\dot\Sigma,j) \to (Q \times \mathbb R, \widetilde J)$ on the…

Symplectic Geometry · Mathematics 2024-10-25 Taesu Kim , Yong-Geun Oh

In this article we are interested in studying regularity up to the boundary for one-phase singularly perturbed fully nonlinear elliptic problems, associated to high energy activation potentials, namely $$ F(X, \nabla u^{\varepsilon}, D^2…

Analysis of PDEs · Mathematics 2015-10-09 Gleydson C. Ricarte , João Vitor da Silva

Perturbative unitarity is a powerful tool for inferring the range of validity of a given effective field theory. Here, we study such a bound in the parameter space of dimension-5 and dimension-6 effective operators that arise in a scenario…

High Energy Physics - Phenomenology · Physics 2020-04-28 Simone Biondini

We consider a class of nonlocal Cahn-Hilliard equations in a bounded domain $\Omega\subset\mathbb{R}^{d}$ $(d\in\{2,3\})$, subject to a nonlocal kinetic rate dependent dynamic boundary condition. This diffuse interface model describes phase…

Analysis of PDEs · Mathematics 2024-12-11 Maoyin Lv , Hao Wu

We consider the initial value problem for a nonlinear shallow water model in horizontal dimension d = 2 and in the presence of a fixed partially immersed solid body on the water surface. We assume that the bottom of the solid body is the…

Analysis of PDEs · Mathematics 2025-01-30 Tatsuo Iguchi , David Lannes

In this manuscript, we investigate regularity estimates for a class of quasilinear elliptic equations in the non-divergence form that may exhibit degenerate behavior at critical points of their gradient. The prototype equation under…

Analysis of PDEs · Mathematics 2025-05-14 Junior da Silva Bessa , João Vitor da Silva

We describe a method, based on "hard" contact topology, of showing the existence of semi-infinite trajectories of contact Hamiltonian flows which start on one Legendrian submanifold and asymptotically converge to another Legendrian…

Mathematical Physics · Physics 2023-05-09 Michael Entov , Leonid Polterovich

In this paper we study the existence, the optimal regularity of solutions, and the regularity of the free boundary near the so-called \emph{regular points} in a thin obstacle problem that arises as the local extension of the obstacle…

Analysis of PDEs · Mathematics 2019-06-18 Agnid Banerjee , Donatella Danielli , Nicola Garofalo , Arshak Petrosyan

This paper is concerned with the Dirichlet initial-boundary value problem of a 2-D parabolic-elliptic system proposed to model the formation of biological transport networks. Even if global weak solutions for this system are known to exist,…

Analysis of PDEs · Mathematics 2025-03-18 Jose A. Carrillo , Bin Li , Li Xie
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