为什么锡这么软？
Why is Tin so soft?
摘要：
本文用相对论无规相位近似方法计算了中子偶112- 124 Sn同位素的等压线强度分布。这里使用的精确校准的模型（"FSUGold“）已经成功地再现了基态观测值以及集体激发-包括90 Zr，144 Sm和208 Pb中的巨磁共振（GMR）。然而，这个模型明显高估了Sn同位素的GMR能量。有人认为，“为什么锡这么软？”“成为该领域的一个重要挑战，应该在不牺牲几个理论模型已经取得的成功的情况下回答这个问题。
英文摘要：
The distribution of isoscalar monopole strength in the neutron-even 112-124Sn-isotopes has been computed using a relativistic random-phase-approximation approach. The accurately-calibrated model used here (``FSUGold'') has been successful in reproducing both ground-state observables as well as collective excitations - including the giant monopole resonance (GMR) in 90Zr, 144Sm, and 208Pb. Yet this same model significantly overestimates the GMR energies in the Sn isotopes. It is argued that the question of ``Why is Tin so soft?'' becomes an important challenge to the field and one that should be answered without sacrificing the success already achieved by several theoretical models.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
