“…6, we focus henceforth on the simple-update approach, which allows us to reach bond dimensions as large as D = 20 in the present problem, rather than the full-update approach, where D = 14 represents a We begin the systematic presentation and comparison of our thermodynamic results by making contact with the previous state of the art, as shown in Ref. [25]. The analysis of these authors, which included ED, QMC, and high-temperature series expansions (HTSEs), terminated at the coupling ratio J/J D = 0.60, where all three methods were beyond their limits.…”