Laboratory Density Functionals

TL;DR

This paper examines different ways to define the density of self-bound systems like nuclei, relating internal and laboratory frame densities, to improve the practical formulation of density functionals.

Contribution

It provides a clear relation between internal and laboratory densities, aiding the development of more accurate density functionals for self-bound systems.

Findings

A trivial deconvolution links internal and laboratory densities.

The relation enhances the practical definition of density functionals.

Facilitates better modeling of self-bound systems like nuclei.

Abstract

We compare several definitions of the density of a self-bound system, such as a nucleus, in relation with its center-of-mass zero-point motion. A trivial deconvolution relates the internal density to the density defined in the laboratory frame. This result is useful for the practical definition of density functionals.