Rigorous Proof of Pseudospin Ferromagnetism in Two-Component Bosonic Systems with Component-Independent Interactions
Soft Condensed Matter
2009-11-07 v1 Statistical Mechanics
Abstract
For a two-component bosonic system, the components can be mapped onto a pseudo-spin degree of freedom with spin quantum number S=1/2. We provide a rigorous proof that for a wide-range of real Hamiltonians with component independent mass and interaction, the ground state is a ferromagnetic state with pseudospin fully polarized. The spin-wave excitations are studied and found to have quadratic dispersion relations at long wave length.
Keywords
Cite
@article{arxiv.cond-mat/0209529,
title = {Rigorous Proof of Pseudospin Ferromagnetism in Two-Component Bosonic Systems with Component-Independent Interactions},
author = {Kun Yang and You-Quan Li},
journal= {arXiv preprint arXiv:cond-mat/0209529},
year = {2009}
}
Comments
4 pages, no figure