# Nucleon momentum distributions in asymmetric nuclear matter

## TL;DR

This paper systematically investigates nucleon momentum distributions in asymmetric nuclear matter using an extended Bruecker-Hartree-Fock approach, revealing how distributions vary with density and isospin asymmetry and proposing a parameterized formula.

## Contribution

It introduces a parameterized formula for nucleon momentum distributions in asymmetric nuclear matter, calibrated to detailed calculations, enhancing modeling accuracy.

## Key findings

- Normalized momentum distributions are shape-invariant across densities and asymmetries.
- Distribution magnitude depends on density and isospin asymmetry, linked to Fermi sea depletion.
- Proposed formula accurately reproduces calculated momentum distributions.

## Abstract

Nucleon momentum distributions at various densities and isospin-asymmetries for nuclear matter are investigated systematically within the extended Bruecker-Hartree-Fock approach.The shapes of the normalized momentum distributions varying with $k/k_{F}$ are practically identical, while the density and isospin dependent magnitude of the distribution is directly related to the depletion of the Fermi sea. Based on these properties, a parameterized formula is proposed with the parameters calibrated to the calculated result.