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We develop a series of molecular dynamics computer simulations of liquid water, performed with a polarizable potential model, to calculate the spinodal line and the curve of maximum density inside the metastable supercooled region. After…

Soft Condensed Matter · Physics 2009-11-11 P. Gallo , M. Minozzi , M. Rovere

Liquid water has anomalous liquid properties, such as its density maximum at 4\degree C. An attempt at theoretical explanation proposes a liquid-liquid phase transition line in the supercooled liquid state, with coexisting low-density (LDL)…

Soft Condensed Matter · Physics 2019-09-04 Peter Mausbach , Helge-Otmar May , George Ruppeiner

Detecting structures at the particle scale within plastically deformed crystalline materials allows a better understanding of the occurring phenomena. While previous approaches mostly relied on applying hand-chosen criteria on different…

Materials Science · Physics 2024-05-15 Armand Barbot , Riccardo Gatti

Ab initio molecular dynamics simulations of liquid water under equilibrium ambient conditions, together with a novel energy decomposition analysis, have recently shown that a substantial fraction of water molecules exhibit a significant…

Disordered Systems and Neural Networks · Physics 2020-06-24 Hossam Elgabarty , Thomas D. Kühne

An experimental proposal to test the existence of a liquid-liquid critical point in water, based on high pressure calorimetric measurements, is presented on this paper. Considering the existence of an intramolecular correlation in the water…

Soft Condensed Matter · Physics 2007-05-23 Manuel I. Marques

The existence of a 'crossover region' in glass-forming liquids has long been considered as a general phenomenon that is as important as the glass transition. One potential origin for the crossover behavior is a liquid-to-liquid phase…

Materials Science · Physics 2015-09-14 S. Lan , M. Blodgett , K. F. Kelton , X. -L. Wang

In the supercooled regime at elevated pressure two forms of liquid water, high-density (HDL) and low-density (LDL), have been proposed to be separated by a coexistence line ending at a critical point, but a connection to ambient conditions…

Soft Condensed Matter · Physics 2011-06-27 K. T. Wikfeldt , A. Nilsson , L. G. M. Pettersson

Previous studies of the structure of liquid water under pressure performed by neutron diffraction, allowed us to establish two structural limits in liquid water. These two limits are closely connected to the two known forms of amorphous ice…

Disordered Systems and Neural Networks · Physics 2016-08-31 M. -C. Bellissent-Funel

We investigate the properties of water along the liquid/vapor coexistence line in the supercooled regime down to the no-man's land. Extensive molecular dynamics simulations of the TIP4P/2005 liquid/vapor interface in the range 198 -- 348 K…

Soft Condensed Matter · Physics 2023-02-15 Alexander Gorfer , Christoph Dellago , Marcello Sega

A popular hypothesis that explains the anomalies of supercooled water is the existence of a metastable liquid-liquid transition hidden below the line of homogeneous nucleation. If this transition exists and if it is terminated by a critical…

Soft Condensed Matter · Physics 2014-08-25 John W. Biddle , Vincent Holten , Mikhail A. Anisimov

Machine-learning (ML) has become a key workhorse in molecular simulations. Building an ML model in this context, involves encoding the information of chemical environments using local atomic descriptors. In this work, we focus on the Smooth…

Soft Condensed Matter · Physics 2023-04-21 Edward Danquah Donkor , Alessandro Laio , Ali Hassanali

Within the so-called "no-man's land" between about 150 and 235 K, crystallization of bulk water is inevitable. The glasslike freezing and a liquid-to-liquid transition of water, predicted to occur in this region, can be investigated by…

Soft Condensed Matter · Physics 2020-09-17 Jonas K. H. Fischer , Pit Sippel , Dmytro Denysenko , Peter Lunkenheimer , Dirk Volkmer , Alois Loidl

The supercritical state is currently viewed as uniform on the pressure-temperature phase diagram. Supercritical fluids have the dynamic motions of a gas but are able to dissolve materials like a liquid. They have started to be deployed in…

Statistical Mechanics · Physics 2014-05-30 Dima Bolmatov , D. Zav'yalov , M. Zhernenkov

The hydrodynamic description of a superfluid is usually based on a two-fluid picture. In this thesis, basic properties of such a relativistic two-fluid system are derived from the underlying microscopic physics of a complex scalar quantum…

High Energy Physics - Phenomenology · Physics 2015-02-03 Stephan Stetina

Phases with distinct thermodynamic properties must differ in their underlying distributions of microscopic structures. While ordered phases are readily distinguished by unit cells and space groups, the local structural basis differentiating…

In the past decade, a literary phrase "No man's land" has been flooded in the scientific papers. The expression is used to describe a meta-stable region in the phase-diagram that cannot be accessed by experiments. It has been claimed based…

Statistical Mechanics · Physics 2022-07-12 Fumio Hirata

We present an efficient criterion for probing the critical temperature of hydrogen based superconductors. We start by expanding the applicability of 3D descriptors of electron localization to superconducting states within the framework of…

Superconductivity · Physics 2024-03-13 Matías E. di Mauro , Benoît Braïda , Ion Errea , Trinidad Novoa , Julia Contreras-García

We have developed a scaled parametric equation of state to describe and predict thermodynamic properties of supercooled water. The equation of state, built on the growing evidence that the critical point of supercooled liquid-liquid water…

Soft Condensed Matter · Physics 2007-05-23 M. A. Anisimov , D. A. Fuentevilla

We use extensive computer simulations to probe local thermodynamic equilibrium (LTE) in a quintessential model fluid, the two-dimensional hard-disks system. We show that macroscopic LTE is a property much stronger than previously…

Statistical Mechanics · Physics 2015-09-16 J. J. del Pozo , P. L. Garrido , P. I. Hurtado

Water shows anomalous properties that are enhanced upon supercooling. The unusual behavior is observed in both H$_2$O and D$_2$O, however with different temperature dependences for the two isotopes. It is often noted that comparing the…

Chemical Physics · Physics 2024-03-14 Greg A. Kimmel