Short-range correlations in nuclear matter using Green's functions within a discrete pole approximation

Abstract

We treat short-range correlations in nuclear matter, induced by the repulsive core of the nucleon-nucleon potential, within the framework of a self-consistent Green's function theory. The effective in-medium interaction sums the ladder diagrams of both the particle-particle and hole-hole type. The demand of self-consistency results in a set of nonlinear equations which must be solved by iteration. We explore the possibility of approximating the single-particle Green's function by a limited number of poles and residues.

9 pages, 3 eps-figures; added two tables dealing with calculations including larger sets of BAGEL-poles

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