| Issue |
EPL
Volume 92, Number 4, November 2010
|
|
|---|---|---|
| Article Number | 46008 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/92/46008 | |
| Published online | 10 December 2010 | |
A discrete model of water with two distinct glassy phases
1
HuGeF Torino - Via Nizza 52, I-10126 Torino, Italy, EU
2
CMP Politecnico di Torino - Corso Duca degli Abruzzi 24, I-10129 Torino, Italy, EU
3
CNR-ISC and CNISM, Dipartimento di Fisica, Politecnico di Torino - Corso Duca degli Abruzzi 24, I-10129 Torino, Italy, EU
Received:
8
July
2010
Accepted:
8
November
2010
We investigate a minimal model for non-crystalline water, defined on a Husimi lattice. The peculiar random-regular nature of the lattice is meant to account for the formation of a random 4-coordinated hydrogen-bond network. The model turns out to be consistent with most thermodynamic anomalies observed in liquid and supercooled-liquid water. Furthermore, the model exhibits two glassy phases with different densities, which can coexist at a first-order transition. The onset of a complex free-energy landscape, characterized by an exponentially large number of metastable minima, is pointed out by the cavity method, at the level of 1-step replica symmetry breaking.
PACS: 64.70.qd – Thermodynamics and statistical mechanics / 64.70.P- – Glass transitions of specific systems / 65.20.Jk – Studies of thermodynamic properties of specific liquids
© EPLA, 2010
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