Reply to "comment on Geometric phases for mixed states during cyclic evolutions"
arXiv:quant-ph/0407076 · doi:10.1088/0305-4470/37/29/N02
Abstract
We show that the geometric phase for mixed state during a cyclic evolution suggested in 2004 J. Phys. A 37 3699 is U(1) invariant and can be observed by nowaday techniques.
Reply to the comment of Erik Sjoqvist