We revisit the issue about the magnetization of the 120β order in the
spin-1/2 triangular lattice Heisenberg model (TLHM) with Density Matrix
Renormalization Group (DMRG). The accurate determination of the magnetization
of this model is challenging for numerical methods and its value exhibits
substantial disparities across various methods. We perform a large-scale DMRG
calculation of this model by employing bond dimension as large as D=24000
and by studying the system with width as large as Lyβ=12. With
careful extrapolation with truncation error and suitable finite size scaling,
we give a conservative estimation of the magnetization as M0β=0.208(8). The
ground state energy per site we obtain is Egβ=β0.5503(8). Our results
provide valuable benchmark values for the development of new methods in the
future.Comment: 6 pages, 6 figure