Ground state properties of the periodic Anderson model with electron-phonon interactions
arXiv:2208.03595 · doi:10.1016/j.aop.2023.169381
Abstract
The periodic Anderson model (PAM) is a fundamental model describing heavy fermion systems. In this paper, we examine the PAM with electron-phonon interactions. Introducing a new analytical method based on operator inequalities, we prove that the ground state at half-filling is unique and a singlet. We also prove that the ground state exhibits short-range antiferromagnetism.
arXiv commentMinor revision
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