In-medium nucleon-nucleon potentials in configuration space

Details In-medium nucleon-nucleon potentials in configuration space In-medium nucleon-nucleon potentials in configuration space

2001-07-05

arxiv.org/abs/nucl-th/0107014v1

J.Phys.G27:2081-2090,2001

Physics

Nuclear Physics

Nuclear Theory

6 pages, 1 table, 4 figures

Scientific paper

10.1088/0954-3899/27/10/309

Based on the thermodynamic Green function approach two-nucleon correlations in nuclear matter at finite temperatures are revisited. To this end, we derive phase equivalent effective $r$-space potentials that include the effect of the Pauli blocking at a given temperature and density. These potentials enter into a Schr\"odinger equation that is the $r$-space representation of the Galitskii-Feynman equation for two nucleons. We explore the analytical structure of the equation in the complex $k$-plane by means of Jost functions. We find that despite the Mott effect the correlation with deuteron quantum numbers are manifested as antibound states, i.e., as zeros of the Jost function on the negative imaginary axis of the complex momentum space. The analysis presented here is also suited for Coulombic systems.

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