(color online) Phase diagram of QSBM for s = 0.3 and Δ = 0.1 obtained from NRG. The circles, squares, and up triangles with guiding lines represent continuous QPT, first-order QPT, and the spin flip lines, respectively. The solid dot marks the jointing point of the continuous and the first-order QPTs. The stars with dashed lines are the points for which the correlation functions are calculated in Fig. 2 (horizontal line) and Fig. 3 (vertical line). NRG parameters are Λ = 4.0, , and .