Energy shift of magnons in a ferromagnetic spinor-dipolar Bose-Einstein condensate
Energy shift of magnons in a ferromagnetic spinor-dipolar Bose-Einstein condensate
Motivated by the recent experiment performed by the Berkeley group [G. E. Marti et al., Phys. Rev. Lett. 113, 165301 (2014)], we consider the dynamics of magnons in a spin-1 spinor-dipolar Bose-Einstein condensate, using mean-field theory. We show that the effective mass of a magnon is increased by the magnetic …