Static Response of Neutron Matter

Neutron Interactions with Matter

How neutrons interact with matter aflkcts the ways in which assays can be pdormed with neutrqs. Neutron interactions with the assay material affkct the interpretation of neutron measurements and limit the amount of fissile material the assay instrument can contain safely. A neutron detector is based on some neutron interaction with the material in the detector. Also, neutron interactions with s...

Incompressibility of neutron - rich matter

The saturation properties of neutron-rich matter are investigated in a relativistic mean-field formalism using two accurately calibrated models: NL3 and FSUGold. The saturation properties—density, binding energy per nucleon, and incompressibility coefficient—are calculated as a function of the neutron-proton asymmetry α ≡ (N − Z)/A to all orders in α. Good agreement (at the 10% level or better)...

Superfluidity in Neutron Star Matter

Quark matter in neutron stars

According to quantum chromodynamics, matter at ultra-high density and low temperature is a quark liquid, with a condensate of Cooper pairs of quarks near the Fermi surface (“color superconductivity”). This paper reviews the physics of color superconductivity, and discusses some of the proposed signatures by which we might detect quark matter in neutron stars.

Neutron matter at finite temperature

The nuclear equation of state plays a central role in the physics of neutron stars and core-collapse supernovae. Renormalization group methods coupled with effective field theory offer a systematic approach to nuclear matter: For low-momentum interactions Vlow k with cutoffs around 2 fm−1, the strong short-range repulsion in conventional nucleon-nucleon (NN) interactions and the tensor force ar...