The neutron matter equation of state from low-momentum interactions

Abstract

We calculate the neutron matter equation of state at finite temperature based on low-momentum nucleon-nucleon and three-nucleon interactions. Our results are compared to the model-independent virial equation of state and to variational calculations. We provide a simple estimate for the theoretical error, important for extrapolations to astrophysical conditions.

Comments: 3 pages, 2 figures, to appear in the proceedings of Quark Confinement and Hadron Spectrum VII (QCHS7), Ponta Delgada (Acores), Portugal, 2-7 September 2006