Impossibility to describe repulsion with contact interaction

Contact interactions always lead to attractive behavior. Arguments are presented to show why a repulsive interacting system, e.g. Bose gases, cannot be described by contact interactions and corresponding treatments are possibly obscured by the appearance of bound states. The usually used cut-offs ar...

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Bibliographic Details
Published inPhysics letters. A Vol. 374; no. 4; pp. 644 - 646
Main Authors Morawetz, K., Männel, M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 11.01.2010
Subjects
05.30.Jp
03.75.Hh
05.30.-d
64.10.+h
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Summary:Contact interactions always lead to attractive behavior. Arguments are presented to show why a repulsive interacting system, e.g. Bose gases, cannot be described by contact interactions and corresponding treatments are possibly obscured by the appearance of bound states. The usually used cut-offs are identified as finite range parameters.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2009.11.043