Higgs Mode and Magnon Interactions in 2D Quantum Antiferromagnets from Raman Scattering

S. A. Weidinger, W. Zwerger

We present a theory for Raman scattering on 2D quantum antiferromagnets. The microscopic Fleury-Loudon Hamiltonian is expressed in terms of an effective $O(3)$ - model. Well within…