Density anomaly in core-softened lattice gas
نویسندگان
چکیده
منابع مشابه
Density Anomaly in Core-Softened Lattice Gas
A two dimensional lattice gas model with ”core-softened” potential is investigated. Two liquid phases and density anomaly are found. The demixing phase transition between the two liquid phases end at a tricritical point that is also the terminus of a critical line. The density anomaly is related to this continuous line.
متن کاملLiquid polymorphism and density anomaly in a lattice gas model.
We present a simple model for an associating liquid in which polymorphism and density anomaly are connected. Our model combines a two dimensional lattice gas with particles interacting through a soft core potential and orientational degrees of freedom represented through thermal "ice variables." The competition between the directional attractive forces and the soft core potential leads to a pha...
متن کاملLiquid polymorphism and density anomaly in a three-dimensional associating lattice gas.
The authors investigate the phase diagram of a three-dimensional associating lattice gas (ALG) model. This model combines orientational icelike interactions and "van der Waals" that might be repulsive, representing, in this case, a penalty for distortion of hydrogen bonds. These interactions can be interpreted as two competing distances, making the connection between this model and continuous i...
متن کاملDiffusion Anomaly in a three dimensional lattice gas
We investigate the relation between thermodynamic and dynamic properties of an associating lattice gas (ALG) model. The ALG combines a three dimensional lattice gas with particles interacting through a soft core potential and orientational degrees of freedom. From the competition between the directional attractive forces and the soft core potential results two liquid phases, double criticality ...
متن کاملMetastable liquid-liquid coexistence and density anomalies in a core-softened fluid.
Linearly sloped or "ramp" potentials belong to a class of core-softened models which possess a liquid-liquid critical point (LLCP) in addition to the usual liquid-gas critical point. Furthermore, they exhibit thermodynamic anomalies in their density and compressibility, the nature of which may be akin to those occurring in water. Previous simulation studies of ramp potentials have focused on ju...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2004
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/16/49/001