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arXiv 1502.06502cond-mat.stat-mech
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水的ST2模型的Phase diagram

Phase diagram of the ST2 model of water

Frank Smallenburg, Peter H. Poole, Francesco Sciortino

摘要:

我们评估了ST 2势[F.H. Stillinger和A. Rahman,J.Chem.Phys.60,1545(1974)],并对长程相互作用进行反应场校正。我们估计了温度-压力平面内的相共存边界,以及气液临界点和气液共存条件。我们的研究框架先前确定的液-液临界点相对于晶相边界的位置,并开辟了在亚稳液-液临界点计算可访问的模型中探索晶体成核的方式。

英文摘要:

We evaluate the free energy of the fluid and crystal phases for the ST2 potential [F.H. Stillinger and A. Rahman, J. Chem. Phys. 60, 1545 (1974)] with reaction field corrections for the long-range interactions. We estimate the phase coexistence boundaries in the temperature-pressure plane, as well as the gas-liquid critical point and gas-liquid coexistence conditions. Our study frames the location of the previously identified liquid-liquid critical point relative to the crystalline phase boundaries, and opens the way for exploring crystal nucleation in a model where the metastable liquid-liquid critical point is computationally accessible.

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。

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