Functional renormalization group approach to neutron matter

• DOI: 10.1016/j.physletb.2014.09.051
• Publication Date: 2014-09-26T17:59:02Z
• Authors: Matthias Drews; Wolfram Weise
• Keywords: Nuclear and High Energy Physics; Nuclear Theory; Physics; QC1-999; FOS: Physical sciences; 01 natural sciences; ddc:; Neutron stars; Neutron matter; Nuclear Theory (nucl-th); High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); 0103 physical sciences; Functional renormalization group

5 pages, 4 figures, to appear in Phys. Lett. B<br/>The chiral nucleon-meson model, previously applied to systems with equal number of neutrons and protons, is extended to asymmetric nuclear matter. Fluctuations are included in the framework of the functional renormalization group. The equation of state for pure neutron matter is studied and compared to recent advanced many-body calculations. The chiral condensate in neutron matter is computed as a function of baryon density. It is found that, once fluctuations are incorporated, the chiral restoration transition for pure neutron matter is shifted to high densities, much beyond three times the density of normal nuclear matter.<br/>