بررسی ساختار سبک‌ترین هسته‌های هایپرونی دو لامبدا ای با استفاده از بسط توابع گوسی

نوع مقاله: مقاله پژوهشی کامل

نویسندگان

گروه فیزیک، دانشکده علوم پایه، دانشگاه شهرکرد، شهرکرد 115

چکیده

در کار حاضر به‌منظور بهبود بهتری از شناخت برهم‌کنش‌های و ، امکان وجود حالت مقید سیستم سه‌جسمی ( لامبدا - لامبدا - پروتون و لامبدا - لامبدا - نوترون ) را از دیدگاه محاسباتی بررسی کرده‌ایم. برای مطالعه‌ی ساختار چنین سیستم سه‌جسمی‌ای از مدل‌های برهم-کنشی ND، NF و NS گروه نایجمین و برهم‌کنش‌های JA و JB گروه یولیچ که اثرات جفت‌شدگی در آن‌ها صریحاً در نظر گرفته شده، برای پتانسیل ، و از یک مدل شبه OBE، برای پتانسیل استفاده کرده‌ایم. کم‌ترین مقدار انرژی سیستم برای شش مدل برهم‌کنشی در محدوده‌ی 6/1 تا MeV 8/1 به‌دست آمد که هیچ حالت مقیدی را برای نشان نمی‌دهند.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of the lightest double- Lambda hypernuclei structure by using Gaussian bases expansion method

نویسندگان [English]

  • Jafar Esmaili
  • Safiye Golamrezae
Department of Physics, Faculty of Basis Sciences, Shahrekord University, Shahrekord 
چکیده [English]

In the present work, to improve the knowledge of and interactions better, the existence possibility of a bound state for the double-hyperonic three-body system ( Lambda - Lambda - proton, Lambda - Lambda - neutron ) has investigated in the computational point of view. To study the structure of these three-body systems, Nijmegen group ND, NF, NS, ESC models and Julich group JA, JB interactions, that coupling effect are explicitly considered for potential, and a pseudo-OBE model for interaction, have been used. Minimum energy value of system for the seven interaction models are obtained in range of  to MeV and therefore no any bound state is found for these system.

کلیدواژه‌ها [English]

  • three-body system
  • Nijmegen an Julich potentials
  • Gaussian basis expansion
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