title: Berry Phase in Lattice QCD.
abstract: We propose the lattice QCD calculation of the Berry phase, which is defined by the ground state of a single fermion. We perform the ground-state projection of a single-fermion propagator, construct the Berry link variable on a momentum-space lattice, and calculate the Berry phase. As the first application, the first Chern number of the (2+1)-dimensional Wilson fermion is calculated by the Monte Carlo simulation.
authors: Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan.
authors: Arata
authors: A
authors: Yamamoto