The description of an impurity atom in a Bose-Einstein condensate can be cast in the form of
Fröhlich's polaron Hamiltonian, where the Bogoliubov excitations play the role of the …

This book is about quantum phenomena in two-dimensional (2D) electron systems with
extremely strong internal interactions. The central objects of interest are Coulomb liquids, in …

The study of two-dimensional electronic systems has revealed a host of new and startling
phenomena, such as the quantum Hall effect. Although effort has gone into studying the …

We consider two large polaron systems that are described by a Fröhlich type of Hamiltonian,
namely the Bose–Einstein condensate (BEC) polaron in the continuum and the acoustic …

The properties of ripplonic polarons in a multielectron bubble in liquid helium are
investigated on the basis of a path-integral variational method. We find that the two …

A review of the experimental and theoretical research on one-dimensional and zero-
dimensional electron systems localized near a liquid helium surface is given. The properties …

We report the observation of the polaronic effect in a 2D electron system on helium films
covering a glass substrate. For thin films and for strong holding electric fields we achieved …

We calculate the ground and the first excited states of an electron trapped within a dimple on
a thin liquid helium film. The electron is localized by a positive impurity charge which is …

Using the variational and self-consistent approaches, the possibility of the formation of a self-
localized polaronic state of an electron in a helium vapor under an increase in its density …

The experimental study of surface electron mobility in quasi-one-dimensional conducting
channels over liquid helium is carried out in a temperature range of 1.5-3 K. It is found that …