Skip to content

Berry Phases with Real Hamiltonians With and Without a Many-body System as a Background

S. P. Hong, H. Doh, S. H. Suck Salk

quant-pharXiv:quant-ph/9605040

Abstract

We present both the gauge theoretic description and the numerical calculations of the Berry phases with the real eigenstates, involving one with a many-body system as a background and the other with no such background. We demonstrate that for the former the sign of the Berry phase factor for a spin 12 particle (hole) coupled to a slow subsystem (phonon) depends on both the strength of electron correlations and the characteristics of the closed paths, unlike the cases for the latter.

Create a lesson