A unitary correlation operator method
نویسندگان
چکیده
منابع مشابه
A unitary correlation operator method
The short range repulsion between nucleons is treated by a unitary correlation operator which shifts the nucleons away from each other whenever their uncorrelated positions are within the replusive core. By formulating the correlation as a transformation of the relative distance between particle pairs, general analytic expressions for the correlated wave functions and correlated operators are g...
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The unitary-correlation-operator method (UCOM) is formulated for the description of lambda hypernuclei. The method is applied to 17 Λ O. A lambda-nucleon effective interaction is derived, taking the coupling of the sigma-nucleon channel into account. The lambda single-particle energies are calculated for the 0s1/2, 0p3/2 and 0p1/2 states employing the Nijmegen soft-core (NSC), Jülich model-Ã (J...
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We present a unitary correlation operator that explicitly induces into shell model type many-body states short ranged two-body correlations caused by the strong repulsive core and the pronounced tensor part of the nucleon-nucleon interaction. Alternatively an effective Hamiltonian can be defined by applying this unitary correlator to the realistic nucleon-nucleon interaction. The momentum space...
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The Unitary Correlation Operator Method (UCOM) (see [1] and references therein), was devised as a means to describe the correlations induced by the short-range repulsion and the tensor force of modern realistic NN interactions by an explicit unitary transformation. One obtains a phase-shift equivalent correlated interaction VUCOM which exhibits a dramatically improved convergence behavior in pr...
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The fully self-consistent Random Phase Approximation (RPA) is constructed within the Unitary Correlation Operator Method (UCOM), which describes the dominant interaction-induced short-range central and tensor correlations by a unitary transformation. Based on the correlated Argonne V18 interaction, the RPA is employed in studies of multipole response in closed-shell nuclei across the nuclide ch...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 1998
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(97)00805-1