182 citations · 1.7k across the 67 of their papers we have counts for
4 papers · 1 filter
A strong-coupling theory of superfluid He
N. Gov, E. Akkermans
We propose a new theoretical approach to the excitation spectrum of superfluid . It is based on the assumption that, in addition to the usual Feynman density fluctuations,…
Correlated atomic motion, phonons and spin-ordering in bcc He
N. Gov, E. Polturak
We propose a new way to treat nuclear magnetism of solid He. We argue that the magnetic interaction arises indirectly as a consequence of correlated zero-point motion of the…
Bcc He as a Coherent Quantum Solid
Nir Gov
In this work we investigate implications of the quantum nature of bcc % He. We show that it is a unique solid phase with both a lattice structure and an Off-Diagonal Long Ran…
Local modes, phonons, and mass transport in solid He
N. Gov, E. Polturak
We propose a model to treat the local motion of atoms in solid He as a local mode. In this model, the solid is assumed to be described by the Self Consistent Harmonic approxi…