Wobbling motion in the multi-bands crossing region

The backbending in the A≃180 mass region is expected to be caused by multi-bands crossing between low-K (g- and s-bands) and high-K bands (Kπ=8+ or 10+). We analyze a mechanism of coupling of these bands in terms of a dynamical treatment for nuclear rotations, i.e., the wobbling motion. The wobbling states are produced through the generator coordinate method after angular momentum projection, in which the intrinsic states are constructed through the 2d-cranked HFB calculations.