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Liquid water exhibits several important anomalous properties in the vicinity of the melting temperature ($T_{\mathrm{m}}$) of ice Ih, including a higher density than ice and a density maximum at 4~$^{\circ}$C. Experimentally, an isotope…

化学物理 · 物理学 2026-01-01 Yifan Li , Bingjia Yang , Chunyi Zhang , Axel Gomez , Pinchen Xie , Yixiao Chen , Pablo M. Piaggi , Roberto Car

The melting point of ice Ih, as well as the temperature of maximum density (TMD) in the liquid phase, has been computed using the path integral Monte Carlo method. Two new models are introduced; TIP4PQ_D2O and TIP4PQ_T2O which are…

统计力学 · 物理学 2017-08-23 Carl McBride , Juan L. Aragones , Eva G. Noya , Carlos Vega

The dielectric spectrum of liquid water, $10^{4} - 10^{11}$ Hz, is interpreted in terms of diffusion of charges, formed as a result of self-ionization of H$_{2}$O molecules. This approach explains the Debye relaxation and the dc…

化学物理 · 物理学 2014-04-30 A. A. Volkov , V. G. Artemov , A. V. Pronin

Specifically, we examine concentrations from [NaCl]=1m to [NaCl]=6m, where 6.1m represents the solubility threshold of NaCl in H2O. For the water model, we employ the flexible TIP4P/$\epsilon_{Flex}$ model, which offers an enhanced…

统计力学 · 物理学 2024-10-25 Raúl Fuentes-Azcatl

We report an exhaustive numerical study of the statistical properties of the potential energy landscape of TIP4P/2005, one of the most accurate rigid water models. We show that, in the region where equilibrated configurations can be…

统计力学 · 物理学 2018-04-18 Philip H. Handle , Francesco Sciortino

A systematic investigation on vapor-liquid equilibria (VLE) of dipolar and quadrupolar fluids is carried out by molecular simulation to develop a new Helmholtz energy contribution for equations of state (EOS). Twelve two-center…

化学物理 · 物理学 2009-04-30 Jadran Vrabec , J. Gross

The interface between the vapor and liquid phase of quadrupolar-dipolar fluids is the seat of an electric interfacial potential whose influence on ion solvation and distribution is not yet fully understood. To obtain further microscopic…

软凝聚态物质 · 物理学 2015-06-12 Lorand Horvath , Titus Beu , Manoel Manghi , John Palmeri

We propose a unified model combining the first-order liquid-liquid and the second-order ferroelectric phase transitions models and explaining various features of the $\lambda$-point of liquid water within a single theoretical framework. It…

软凝聚态物质 · 物理学 2012-01-31 Peter O. Fedichev , Leonid I. Menshikov

Phase separation and criticality are analyzed in $z$:1 charge-asymmetric ionic fluids of equisized hard spheres by generalizing the Debye-H\"{u}ckel approach combined with ionic association, cluster solvation by charged ions, and hard-core…

统计力学 · 物理学 2009-11-10 Jean-Noel Aqua , Shubho Banerjee , Michael E. Fisher

The temperature scale of simple water models in general does not coincide with the natural one. Therefore, in order to make a meaningful evaluation of different water models a temperature rescaling is necessary. In this paper we introduce a…

The dielectric properties of molecules or nanostructures are usually modified in a complex manner, when assembled into a condensed phase. We propose a first-principles method to compute polarizabilities of sub-entities of solids and…

化学物理 · 物理学 2018-09-10 Ding Pan , Marco Govoni , Giulia Galli

We report the diffusion coefficient and viscosity of popular rigid water models: Two non polarizable ones (SPC/E with 3 sites, and TIP4P/2005 with 4 sites) and a polarizable one (Dang-Chang, 4 sites). We exploit the dependence of the…

In this work the high pressure region of the phase diagram of water has been studied by computer simulation by using the TIP4P/2005 model of water. Free energy calculations were performed for ices VII and VIII and for the fluid phase to…

材料科学 · 物理学 2009-01-14 J. L. Aragones , M. M. Conde , E. G. Noya , C. Vega

Water shows numerous thermodynamic, dynamic, and structural anomalies. Recent experiments [Eichler et al. Phys. Rev. Lett. 134, 134101 (2025)], based on measurements of shear and bulk viscosities of liquid water up to 1.6 GPa, have reported…

软凝聚态物质 · 物理学 2026-01-27 José Martín-Roca , Alberto Zaragoza , Frédéric Caupin , Chantal Valeriani

Supercooled water is a metastable phase of liquid water below the melting temperature. An interesting discussion recently developed on the relationship between crystallization rate and the time scales of equilibration within the liquid…

软凝聚态物质 · 物理学 2015-06-05 Roman Shevchuk , Francesco Rao

A computer adapted theory for self-consistent calculations of the wavevector- and frequency-dependent dielectric constant for interaction site models of polar systems is proposed. A longitudinal component of the dielectric constant is…

化学物理 · 物理学 2015-06-26 Igor P. Omelyan

In the first two papers in this series, we developed new shifted potential (SP), gradient shifted force (GSF), and Taylor shifted force (TSF) real-space methods for multipole interactions in condensed phase simulations. Here, we discuss the…

化学物理 · 物理学 2016-08-18 Madan Lamichhane , Thomas Parsons , Kathie E. Newman , J. Daniel Gezelter

Computational studies of liquid water and its phase transition into vapor have traditionally been performed using classical water models. Here we utilize the Deep Potential methodology -- a machine learning approach -- to study this…

Many model potential energy surfaces (PESs) have been reported for water; however, none are strictly from "first principles". Here we report such a potential, based on a many-body representation at the CCSD(T) level of theory up to the…

化学物理 · 物理学 2022-06-28 Qi Yu , Chen Qu , Paul L. Houston , Riccardo Conte , Apurba Nandi , Joel M. Bowman

Molecular dipole moment in liquid water is an intriguing property, partly due to the fact that there is no unique way to partition the total electron density into individual molecular contributions. The prevailing method to circumvent this…

化学物理 · 物理学 2021-05-17 Lisanne Knijff , Chao Zhang