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Low-lying Excitations in One-dimensional Lattice Electron Systems by Tasaki, Hal is a scholarly article available to read on EtoBox.

What is Low-lying Excitations in One-dimensional Lattice Electron Systems about?

We consider a general one-dimensional tight-binding electron model which has a period $P$. For any filling factor $\nu$ such that $P\nu$ is non-integral, we prove that the model in the infinite volume limit has either a symmetry breaking or a unique ground state with gapless excitations. The proof is based on the idea of Yamanaka, Oshikawa and Affleck (cond-mat/9701141), who extended the Lieb-Schultz-Mattis argument to electron systems.

Author

Tasaki, Hal

Published

2004

Language

EN