Impossibility to describe repulsion with contact interaction

K. Morawetz; M. Maennel

doi:10.1016/j.physleta.2009.11.043

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arXiv · 0901.3650

Impossibility to describe repulsion with contact interaction

K. Morawetz·M. Maennel

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Abstract

Contact interactions always lead to attractive behaviour. 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.

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K. Morawetz, M. Maennel. 2009-11-09. Impossibility to describe repulsion with contact interaction. https://doi.org/10.1016/j.physleta.2009.11.043

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