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Informal Pizza SeminarEffective nuclear interactions and neutron star coolingAchim SchwenkOhio State UniversityI will review recent advances in deriving a model-independent low-momentum nucleon-nucleon interaction. This unifies all potential models used in nuclear structure calculations. New applications to few-nucleon systems are presented including a low-momentum three-body force. I will then discuss the impact of many-body effects on pairing and effective interactions in neutron/nuclear matter, with particular attention for the spin dependence. We find that spin (spin-orbit) fluctuations deplete superfluidity both in the crust (and interior) of neutron stars. The effective interactions are further used to constrain neutrino emissivities in neutron stars. The implications for the cooling of low-mass neutron stars are discussed.
Tuesday, June 1st 2004, 13:00
Ernest Rutherford Physics Building, room 326 |