Tadahiro Miyao, Hayato Tominaga
Published 2020-07-28Version 1
We study ground state properties of the Kondo lattice model with an electron-phonon interaction. The ground state is proved to be unique; in addition, the total spin of the ground state is determined according to the lattice structure. To prove the assertions, an extension of the method of spin reflection positivity is given in terms of order preserving operator inequalities.
Comments: 29 pages, 2 figures
The electron-phonon interaction from fundamental local gauge symmetries in solids
Long-range charge order in the extended Holstein--Hubbard model
Nagaoka's theorem in the Holstein-Hubbard model
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