Dynamical Symmetry Breaking in Quasistatic Magnetic Oscillations

TL;DR

This paper explores how adiabatic processes in magnetized ferrite disks lead to macroscopic quantum effects such as symmetry breaking, magnetic currents, and eigen electric moments, supported by experimental and theoretical analysis.

Contribution

It introduces a theory showing that adiabatic motion in ferrite disks causes macroscopic quantum effects, revealing new topological phenomena in magnetic-dipolar oscillations.

Findings

Demonstrates macroscopic quantum symmetry breaking in ferrite disks

Identifies magnetic currents and eigen electric moments arising from adiabatic processes

Supports theory with recent microwave experimental observations

Abstract

Recent microwave experiments demonstrate the anapole-moment and magnetoelectric properties in quasi-2D ferrite particles with magnetic-dipolar-wave oscillating spectra. The theory developed in this paper shows that there are the macroscopically quantum topological effects. Quantum coherence for macroscopic systems refers to circumstances when large numbers of particles can collectively cooperate in a single quantum state. These effects are rarely observed through macroscopic measurements because statistical averaging over many states usually masks all evidence of quantum discreteness. Magnetic-dipolar oscillating modes in normally magnetized ferrite disks demonstrate properties of a Hamiltonian system. The purpose of this paper is to show that because of the adiabatic motion process for such a Hamiltonian system one has macroscopic quantum effects of symmetry breaking, magnetic currents, and eigen electric moments.