SciPost Submission Page
An Effective Field Theory of Magneto-Elasticity
by Shashin Pavaskar, Riccardo Penco, Ira Z. Rothstein
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Shashin Pavaskar |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202203_00015v1 (pdf) |
| Date accepted: | 2022-04-04 |
| Date submitted: | 2022-03-13 23:17 |
| Submitted by: | Pavaskar, Shashin |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
|
| Approach: | Theoretical |
Abstract
We utilize the coset construction to derive the effective field theory of magnon-phonon interactions in (anti)-ferromagnetic and ferrimagnetic insulating materials. The action is used to calculate the equations of motion which generalize the Landau-Lifshitz and stress equations to allow for magneto-acoustic couplings to all orders in the fields at lowest order in the derivative expansion. We also include the symmetry breaking effects due to Zeeman, and Dzyaloshinsky-Moriya interactions. This effective theory is a toolbox for the study of magneto-elastic phenomena from first principles. As an example we use this theory to calculate the leading order contribution to the magnon decay width due to its the decay into phonons.
Author comments upon resubmission
Thank you,
Shashin Pavaskar, Riccardo Penco and Ira Z. Rothstein
List of changes
1. We added comments below eq. (70) and (71) on how the exact form of the functional F(B) can be fixed.
2. We have fixed typos wherever necessary.
Published as SciPost Phys. 12, 155 (2022)
Reports on this Submission
Report #2 by Anonymous (Referee 4) on 2022-3-29 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202203_00015v1, delivered 2022-03-29, doi: 10.21468/SciPost.Report.4808
Strengths
1. The paper was well-written and easy to follow.
2. The purpose of the paper was clear from the beginning and all calculations were carried out methodically to support the initial purpose.
3. The topic of the paper was interesting and has clearly opened avenues of future research.
4. Not only did the authors treat the subject of magnons in solids from a novel perspective, they also derived new, more general equations governing their behavior.
Weaknesses
1. None
Report
This journal's acceptance criteria are met and I recommend this paper for publication.
Requested changes
None