Abstract
An enhanced binding of an N-particle system linearly coupled to a scalar bose field is investigated, where N ≥ 2. It is not assumed that this system has a ground state for a zero coupling. It is shown, however, that there exists a ground state for sufficiently large values of a coupling constant. Basic ingredients of the proof are a weak coupling limit and a modified HVZ theorem.
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Hiroshima, F., Sasaki, I. Enhanced binding of an N-particle system interacting with a scalar bose field I. Math. Z. 259, 657–680 (2008). https://doi.org/10.1007/s00209-007-0243-z
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DOI: https://doi.org/10.1007/s00209-007-0243-z