Anomalously large damping of long-wavelength quasiparticles caused by long-range interaction

Details Anomalously large damping of long-wavelength quasiparticles caused by long-range interaction Anomalously large damping of long-wavelength quasiparticles caused by long-range interaction

2010-07-19

arxiv.org/abs/1007.3081v2

Phys. Rev. B 82, 024432 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages, 6 figures, some minor corrections have been made, to appear in PRB

Scientific paper

10.1103/PhysRevB.82.024432

We demonstrate that long-range interaction in a system can lead to a very strong interaction between long-wavelength quasiparticles and make them heavily damped. In particular, we discuss magnon spectrum using 1/S expansion in 3D Heisenberg ferromagnet (FM) with arbitrary small dipolar forces at T<

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