Spin waves and spin instabilities in quantum plasmas

TL;DR

This paper introduces a quantum hydrodynamics approach to describe spin wave phenomena and instabilities in quantum plasmas, revealing new wave modes and neutron beam interactions.

Contribution

It develops a method for deriving quantum plasma evolution equations and identifies novel spin-related wave dispersion branches and instabilities.

Findings

Discovery of spin-electromagnetic plasma waves

Identification of self-consistent spin waves

Analysis of neutron beam interactions with quantum plasma

Abstract

We describe main ideas of method of many-particle quantum hydrodynamics allows to derive equations for description of quantum plasma evolution. We also present definitions of collective quantum variables suitable for quantum plasmas. We show that evolution of magnetic moments (spins) in quantum plasmas leads to several new branches of wave dispersion: spin-electromagnetic plasma waves and self-consistent spin waves. Propagation of neutron beams through quantum plasmas is also considered. Instabilities appearing due to interaction of magnetic moments of neutrons with plasma are described.