Sala Seminarios IFIC (Edf. Institutos de Investigación)
Sala Seminarios IFIC
Edf. Institutos de Investigación
Descripción
Renormalization group methods are applied to the nuclear many-body problem following the approach proposed by Shankar. Our starting point is the unique two-body low momentum interaction $V_{\text{low k}}$. The RG flow equations are solved in the particle-hole channels for the quasiparticle scattering amplitude and effective interaction in neutron matter. Results for the Fermi liquid parameters, the equation of state of neutron matter and the $^1$S$_0$ superfluid pairing gap are presented.
Furthermore, novel spin-dependent components of the quasiparticle interaction induced by polarization contributions are discussed. As an example, the consequences for the $^3$P$_2$ pairing gap for neutrons in the interior of neutron stars is discussed.