Lagrangian approach and dissipative magnetic systems

Details Lagrangian approach and dissipative magnetic systems Lagrangian approach and dissipative magnetic systems

2011-04-15

arxiv.org/abs/1104.3002v1

Physics

Condensed Matter

Statistical Mechanics

12 pages, 1 figure

Scientific paper

A Lagrangian is introduced which includes the coupling between magnetic moments $\mathbf{m}$ and the degrees of freedom $\boldsymbol{\sigma}$ of a reservoir. In case the system-reservoir coupling breaks the time reversal symmetry the magnetic moments perform a damped precession around an effective field which is self-organized by the mutual interaction of the moments. The resulting evolution equation has the form of the Landau-Lifshitz-Gilbert equation. In case the bath variables are constant vector fields the moments $\mathbf{m}$ fulfill the reversible Landau-Lifshitz equation. Applying Noether's theorem we find conserved quantities under rotation in space and within the configuration space of the moments.

Affiliated with

Also associated with

No associations

Rating

Lagrangian approach and dissipative magnetic systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lagrangian approach and dissipative magnetic systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lagrangian approach and dissipative magnetic systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-8608