Peculiar features of the interaction potential between hydrogen and antihydrogen at intermediate separations

• 来源期刊: 中国物理B(英文版)
• 关键词: few-body problems potential energy curve perturbation theory H-H interaction
• 年，卷（期）: 2008,（8）
• 页码范围: 2897-2908
• 页数: 12页
• 语种: 英文

摘要

This paper evaluates the interaction potential between a hydrogen and an antihydrogen using the second-order perturbation theory within the framework of the four-body system in a separable two-body basis. It finds that the H-H interaction potential possesses the peculiar features of a shallow local minimum located around interatomic separations of r ～ 6a.u. and a barrier rising at r<～ 5a.u.