Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-07-18
Phys.Rev.Lett.99:232501,2007
Physics
Nuclear Physics
Nuclear Theory
4 pages, 4 figures. Corrected typos
Scientific paper
10.1103/PhysRevLett.99.232501
The calculation of transport properties of Fermi liquids, based on the formalism developed by Abrikosov and Khalatnikov, requires the knowledge of the probability of collisions between quasiparticles in the vicinity of the Fermi surface. We have carried out a numerical study of the shear viscosity of pure neutron matter, whose value plays a pivotal role in determining the stability of rotating neutron stars, in which these processes are described using a state-of-the-art nucleon-nucleon potential model. Within our approach medium modifications of the scattering cross section are consistently taken into account, through an effective interaction obtained from the matrix elements of the bare interaction between correlated states. Inclusion of medium effects lead to a large increase of the viscosity at densities larger than $\sim 0.1$ fm^{-3}.
Benhar Omar
Valli Marco
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