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Polarization contributions to the spin-dependence of the effective interaction in neutron matter

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arxiv nucl-th/0307089 v2 pith:6MLWWJV3 submitted 2003-07-23 nucl-th

A. Schwenk (1) , B. Friman (2) ((1) Ohio State U. , (2) GSI) This is my paper · ORCID
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keywords interactioncontributionseffectivepolarizationforcesneutronspin-orbittensor
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We calculate the modification of the effective interaction of particles on the Fermi surface due to polarization contributions, with particular attention to spin-dependent forces. In addition to the standard spin-spin, tensor and spin-orbit forces, spin non-conserving effective interactions are induced by screening in the particle-hole channels. Furthermore, a novel long-wavelength tensor force is generated. We compute the polarization contributions to second order in the low-momentum interaction V_{low k} and find that the medium-induced spin-orbit interaction leads to a reduction of the 3P2 pairing gap for neutrons in the interior of neutron stars.

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Cited by 3 Pith papers

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