Speaker: Achim Schwenk (Ohio State University)

Polarization contributions to the spin dependence of effective nuclear interactions and their importance for neutron star physics

I will discuss 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. I will discuss results for the effective non-central interactions to second-order in V_{low k} and their relevance to the physics of neutron stars, where I will focus on P-wave pairing and neutrino emission from neutrino pair bremsstrahlung.