We review the physics of helium nanodroplets with emphasis on theoretical aspects that
have been the subject of recent research, like 3 He and mixed 3 He− 4 He droplets, vortices …

Quantum crystals abound in the whole range of solid-state species. Below a certain
threshold temperature the physical behavior of rare gases (He 4 and Ne), molecular solids …

The path-integral formulation of the statistical mechanics of quantum many-body systems is
described, with the purpose of introducing practical techniques for the simulation of solids …

The universe abounds with solid helium in polymorphic forms. Therefore, exploring the
allotropes of helium remains vital to our understanding of nature. However, it is challenging …

We show that, at high densities, fully variational solutions of solidlike types can be obtained
from a density functional formalism originally designed for liquid He 4. Motivated by this …

Intense ultrashort laser pulses can melt crystals in less than a picosecond but, in spite of
over thirty years of active research, for many materials it is not known to what extent thermal …

accepted July 30, 2008; published November 10, 2008) The possibility of a supersolid state
of matter, ie, a crystalline solid exhibiting superfluid properties, first appeared in theoretical …

Path integral simulations are used to study the thermodynamic and structural properties of
quantum Lennard-Jones solids as a function of the degree of quantum delocalization or the …

This work reviews progress in the field of the dynamics of disordered condensed matter,
encompassing materials where at least one component lacks either rotational or …

The mean-square atomic displacement in hcp-phase solid He 4 has been measured in
crystals with a molar volume of 21.3 cm 3. It is temperature independent from 1 K to 140 mK …