{"title":"准约束 $$K^- pp$$ 状态的微调","authors":"N. V. Shevchenko","doi":"10.1007/s00601-024-01901-9","DOIUrl":null,"url":null,"abstract":"<div><p>Characteristics of the quasi-bound state in the <span>\\(K^- pp\\)</span> system strongly depend on the model of antikaon–nucleon interaction and weakly—on the nucleon–nucleon potential. In the present paper, dynamically exact Faddeev-type calculations with coupled <span>\\(\\bar{K}NN\\)</span> and <span>\\(\\pi \\varSigma N\\)</span> were performed using different models of the <span>\\(\\varSigma N\\)</span> and <span>\\(\\pi N\\)</span> interactions to study the influence of these “less important” interactions on the three-body result. In addition, dynamically exact three-body Faddeev-type AGS calculations with three coupled particle channels <span>\\(\\bar{K}NN - \\pi \\varSigma N - \\pi \\varLambda N\\)</span> were performed.</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fine-Tuning of the Quasi-Bound \\\\(K^- pp\\\\) State\",\"authors\":\"N. V. Shevchenko\",\"doi\":\"10.1007/s00601-024-01901-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Characteristics of the quasi-bound state in the <span>\\\\(K^- pp\\\\)</span> system strongly depend on the model of antikaon–nucleon interaction and weakly—on the nucleon–nucleon potential. In the present paper, dynamically exact Faddeev-type calculations with coupled <span>\\\\(\\\\bar{K}NN\\\\)</span> and <span>\\\\(\\\\pi \\\\varSigma N\\\\)</span> were performed using different models of the <span>\\\\(\\\\varSigma N\\\\)</span> and <span>\\\\(\\\\pi N\\\\)</span> interactions to study the influence of these “less important” interactions on the three-body result. In addition, dynamically exact three-body Faddeev-type AGS calculations with three coupled particle channels <span>\\\\(\\\\bar{K}NN - \\\\pi \\\\varSigma N - \\\\pi \\\\varLambda N\\\\)</span> were performed.</p></div>\",\"PeriodicalId\":556,\"journal\":{\"name\":\"Few-Body Systems\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-03-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Few-Body Systems\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00601-024-01901-9\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Few-Body Systems","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s00601-024-01901-9","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Characteristics of the quasi-bound state in the \(K^- pp\) system strongly depend on the model of antikaon–nucleon interaction and weakly—on the nucleon–nucleon potential. In the present paper, dynamically exact Faddeev-type calculations with coupled \(\bar{K}NN\) and \(\pi \varSigma N\) were performed using different models of the \(\varSigma N\) and \(\pi N\) interactions to study the influence of these “less important” interactions on the three-body result. In addition, dynamically exact three-body Faddeev-type AGS calculations with three coupled particle channels \(\bar{K}NN - \pi \varSigma N - \pi \varLambda N\) were performed.
期刊介绍:
The journal Few-Body Systems presents original research work – experimental, theoretical and computational – investigating the behavior of any classical or quantum system consisting of a small number of well-defined constituent structures. The focus is on the research methods, properties, and results characteristic of few-body systems. Examples of few-body systems range from few-quark states, light nuclear and hadronic systems; few-electron atomic systems and small molecules; and specific systems in condensed matter and surface physics (such as quantum dots and highly correlated trapped systems), up to and including large-scale celestial structures.
Systems for which an equivalent one-body description is available or can be designed, and large systems for which specific many-body methods are needed are outside the scope of the journal.
The journal is devoted to the publication of all aspects of few-body systems research and applications. While concentrating on few-body systems well-suited to rigorous solutions, the journal also encourages interdisciplinary contributions that foster common approaches and insights, introduce and benchmark the use of novel tools (e.g. machine learning) and develop relevant applications (e.g. few-body aspects in quantum technologies).