Lump solutions of the fractional Kadomtsev–Petviashvili equation
Of concern is the fractional Kadomtsev–Petviashvili (fKP) equation and its lump solution. As in the classical Kadomtsev–Petviashvili equation, the fKP equation comes in two versions: fKP-I (strong surface tension case) and fKP-II (weak surface tension case). We prove the existence of nontrivial lump...
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Published in | Fractional calculus & applied analysis Vol. 27; no. 1; pp. 22 - 63 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Cham
Springer International Publishing
01.02.2024
|
Subjects | |
Online Access | Get full text |
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Summary: | Of concern is the fractional Kadomtsev–Petviashvili (fKP) equation and its lump solution. As in the classical Kadomtsev–Petviashvili equation, the fKP equation comes in two versions: fKP-I (strong surface tension case) and fKP-II (weak surface tension case). We prove the existence of nontrivial lump solutions for the fKP-I equation in the energy subcritical case
α
>
4
5
by means of variational methods. It is already known that there exist neither nontrivial lump solutions belonging to the energy space for the fKP-II equation [
9
] nor for the fKP-I when
α
≤
4
5
[
26
]. Furthermore, we show that for any
α
>
4
5
lump solutions for the fKP-I equation are smooth and decay quadratically at infinity. Numerical experiments are performed for the existence of lump solutions and their decay. Moreover, numerically, we observe cross-sectional symmetry of lump solutions for the fKP-I equation. |
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ISSN: | 1311-0454 1314-2224 |
DOI: | 10.1007/s13540-023-00236-2 |