Electron. J. Differential Equations, Vol. 2025 (2025), No. 76, pp. 1-30.

Mild solutions to Love-type equations on R^2

Bui Duc Nam, Bui Dai Nghia, Nguyen Anh Tuan

Abstract:
In this article, we study a non-local Love problem on unbounded domains where the non-locality in the main equation is interpreted as a fractional Laplacian operator. With various assumptions on the initial conditions, we derive several estimates for mild solutions for the homogeneous source scenario. For the nonlinear problem, we show the existence and uniqueness of a global mild solution. In two cases, we obtain convergence results. The first one states that the solution to the fractional Love equation converges to the mild solution of the fractional wave equation according to a cross-section radius parameter. The second result shows that solutions of the fractional Love equation incorporating the fractional Laplacian operator converge to those of the classical problem, involving the usual Laplacian, as the fractional orders approach 1. This work is the first that we are aware of that deals with mild solutions of Love equations on unbounded domains.

Submitted March 19, 2025. Published July 22, 2025.
Math Subject Classifications: 35L05, 35Q74, 35B40.
Key Words: Love type equation; global solution; regularity; behavior of solutions; convergence
DOI: 10.58997/ejde.2025.76

Show me the PDF file (456 KB), TEX file for this article.

Bui Duc Nam
Ho Chi Minh City University of Industry and Trade
Vietnam
email: nambd@huit.edu.vn
Bui Dai Nghia
Faculty of Mathematics and Computer Science
University of Science, Ho Chi Minh City, Vietnam
\email: dainghia2008@hcmuaf.edu.vn
Nguyen Anh Tuan
Division of Applied Mathematics
Science and Technology Advanced Institute
Van Lang University, Ho Chi Minh City, Vietnam
email: nguyenanhtuan@vlu.edu.vn

Return to the EJDE web page