17 research outputs found

    Fine-Tuning Renormalization and Two-particle States in Nonrelativistic Four-fermion Model

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    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.Comment: 13 pages, LaTex, no figures, to be published in IJMP

    Three-particle States in Nonrelativistic Four-fermion Model

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    On a nonrelativistic contact four-fermion model we have shown that the simple Lambda-cut-off prescription together with definite fine-tuning of the Lambda dependency of "bare"quantities lead to self-adjoint semi-bounded Hamiltonian in one-, two- and three-particle sectors. The fixed self-adjoint extension and exact solutions in two-particle sector completely define three-particle problem. The renormalized Faddeev equations for the bound states with Fredholm properties are obtained and analyzed.Comment: 9 pages, LaTex, no figure

    The application of grid-characteristic method in solution of fractured formations exploration seismology direct problems (review article)

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    Kabbalah: A Medieval Tradition and Its Contemporary Appeal

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    Effect of Roughness and Discharge

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    Types of Stilling Basins

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    Expanding Channel

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