{"title":"Standing waves of nonlinear Schrödinger systems with all attractive forces","authors":"Jaeyoung Byeon","doi":"10.1112/jlms.70594","DOIUrl":null,"url":null,"abstract":"<p>Since the pioneering work of Lin and Wei on nonlinear Schrödinger systems of <span></span><math>\n <semantics>\n <mi>n</mi>\n <annotation>$n$</annotation>\n </semantics></math> components with interaction forces <span></span><math>\n <semantics>\n <msub>\n <mi>a</mi>\n <mrow>\n <mi>i</mi>\n <mi>j</mi>\n </mrow>\n </msub>\n <annotation>$a_{ij}$</annotation>\n </semantics></math> between the <span></span><math>\n <semantics>\n <mi>i</mi>\n <annotation>$i$</annotation>\n </semantics></math>-th and <span></span><math>\n <semantics>\n <mi>j</mi>\n <annotation>$j$</annotation>\n </semantics></math>-th components for <span></span><math>\n <semantics>\n <mrow>\n <mn>1</mn>\n <mo>⩽</mo>\n <mi>i</mi>\n <mo>,</mo>\n <mi>j</mi>\n <mo>⩽</mo>\n <mi>n</mi>\n </mrow>\n <annotation>$1\\leqslant i,j\\leqslant n$</annotation>\n </semantics></math>, there have been numerous further developments in many directions. However, even in the simplest case where all interaction forces are attractive, (which corresponds to <span></span><math>\n <semantics>\n <mrow>\n <msub>\n <mi>a</mi>\n <mrow>\n <mi>i</mi>\n <mi>j</mi>\n </mrow>\n </msub>\n <mo>⩾</mo>\n <mn>0</mn>\n </mrow>\n <annotation>$a_{ij} \\geqslant 0$</annotation>\n </semantics></math> for every <span></span><math>\n <semantics>\n <mrow>\n <mn>1</mn>\n <mo>⩽</mo>\n <mi>i</mi>\n <mo>,</mo>\n <mi>j</mi>\n <mo>⩽</mo>\n <mi>n</mi>\n </mrow>\n <annotation>$1\\leqslant i,j\\leqslant n$</annotation>\n </semantics></math>), a systematic approach to finding a solution with all positive components is still not known. In the special case <span></span><math>\n <semantics>\n <mrow>\n <mi>n</mi>\n <mo>=</mo>\n <mn>2</mn>\n </mrow>\n <annotation>$n=2$</annotation>\n </semantics></math>, a very systematic approach has been developed by Ambrosetti and Colorado. In this paper, we review the fundamental works by Lin–Wei and Ambrosetti–Colorado and further developments.</p>","PeriodicalId":49989,"journal":{"name":"Journal of the London Mathematical Society-Second Series","volume":"113 6","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1112/jlms.70594","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the London Mathematical Society-Second Series","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1112/jlms.70594","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
Since the pioneering work of Lin and Wei on nonlinear Schrödinger systems of components with interaction forces between the -th and -th components for , there have been numerous further developments in many directions. However, even in the simplest case where all interaction forces are attractive, (which corresponds to for every ), a systematic approach to finding a solution with all positive components is still not known. In the special case , a very systematic approach has been developed by Ambrosetti and Colorado. In this paper, we review the fundamental works by Lin–Wei and Ambrosetti–Colorado and further developments.
期刊介绍:
The Journal of the London Mathematical Society has been publishing leading research in a broad range of mathematical subject areas since 1926. The Journal welcomes papers on subjects of general interest that represent a significant advance in mathematical knowledge, as well as submissions that are deemed to stimulate new interest and research activity.