A Possible Solution to the Difficulty in the Interpretation of Deuteron Compositeness
arxiv(2023)
摘要
We study the theoretical structure of compositeness with explicit energy
dependence, and find a possible explanation for the difficulty in the
interpretation of compositeness of deuteron. Compositeness of deuteron is
calculated as larger than one in many methods like weak-binding limit. Even
though it is widely assumed that the energy dependence in interaction always
comes from other states, which we call surjective interpretation, we find that
the outcome of deuteron may suggest a violation of surjective interpretation.
We directly perform numerical and perturbative calculations of deuteron
compositeness. It is concluded that if the energy dependent part of interaction
contributes to attraction, compositeness is likely to be enhanced from unity.
We discuss the indications of this outcome and the model dependence of
compositeness. We propose a straightforward extension and a thorough revise on
the formalism of compositeness with field theory considerations.
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