Density Functional in Liquid Helium: Recent Applications to Droplets and Surfaces

TL;DR

This paper introduces an improved density functional for liquid helium, providing accurate predictions for inhomogeneous systems like droplets and surfaces, advancing theoretical understanding in this area.

Contribution

The paper develops a new density functional for liquid helium that enhances accuracy for inhomogeneous systems, improving upon previous models.

Findings

Accurate predictions for free surfaces and droplets

Effective modeling at interatomic distances

Improved theoretical framework for liquid helium

Abstract

We present a new density functional, which is the result of a natural evolution and improvement of previous density functional theories for liquid helium. We focus on the key ingredients of the theory, showing how they determine important predictions concerning inhomogeneous systems. These predictions turn out to be quite accurate even at the level of interatomic distances. We discuss the results for the free surface and droplets.