Fig. 2: Defect induced attractive fixed point.

a Schematic plot of the RG diagram. b The scaling dimension of displacement operator \({\Delta }_{\hat{D}}\) as a function of defect strength h_d. Different colored symbols represent the results based on various system sizes. c Finite-size extrapolation of \({\Delta }_{\hat{D}}\) for various h_d (see Supplementary Note 2 and 3 in Supplementary Material). A sufficient large h_d gives almost identical \({\Delta }_{\hat{D}}\approx 2\), supporting an attractive RG fixed point at h_d = ∞. Different colored symbols represent the results based on various defect strength h_d.