During the last decade, density function theory (DFT) in its static and dynamic time
dependent forms, has emerged as a powerful tool to describe the structure and dynamics of …

We present a review of the properties of negative ions that are produced when electrons are
inserted into superfluid helium-4. It is convenient to divide the ions into two groups. The first …

This book, Structure of Space and the Submicroscopic Deterministic Concept of Physics,
completely formalizes fundamental physics by showing that all space, which consists of …

We report an experimental investigation of the electric response of superfluid helium that
arises in the presence of a second sound standing wave. It was found that the signal of the …

We study the motion of an electron bubble in the zero-temperature limit where neither
phonons nor rotons provide a significant contribution to the drag exerted on an ion moving …

The sinking of alkali cations in superfluid 4 He nanodroplets is investigated theoretically
using liquid 4 He time-dependent density functional theory at zero temperature. The …

Have you ever wondered about Time: what it is or how to discuss it? If you have, then you
may have been bewildered by the many different views and opinions in many diverse fields …

The Orsay-Trento bosonic density functional theory model is extended to include dissipation
due to the viscous response of superfluid 4 He present at finite temperatures. The viscous …

Exotic ions are negatively charged objects which have been detected in superfluid helium-4
at temperatures in the vicinity of 1 K. Mobility experiments in several different labs have …

We explore the possibility that the fast and exotic negative ions in superfluid helium are
electrons bound to quantized vortex structures, the simplest being a ring. In the states we …