Chern-Simons invariant in the Berry phase of a $2\times2$ Hamiltonian.

Hsiang, Wu-YiWu-YiHsiangLee, Dung-HaiDung-HaiLee2010-10-152018-06-282010-10-152018-06-282001-01http://ntur.lib.ntu.edu.tw//handle/246246/216246en-USChern-Simons invariant in the Berry phase of a $2\times2$ Hamiltonian.journal article