Fine-Tuning Renormalization and Two-particle States in Nonrelativistic Four-fermion Model
A. N. Vall, S. E. Korenblit, V. M. Leviant, A. V. Sinitskaya, A. B. Tanaev
Abstract
Various exact solutions of two-particle eigenvalue problems for nonrelativistic contact four-fermion current-current interaction are obtained. Specifics of Goldstone mode is investigated. The connection between a renormalization procedure and construction of self-adjoint extensions is revealed.
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