Specific heat and structure factor in the square ANNNI model by Monte Carlo simulation

2010 ◽  
Vol 81 (9) ◽  
Author(s):  
E. Rastelli ◽  
S. Regina ◽  
A. Tassi
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Specific Heat ◽  
Structure Factor ◽  
Annni Model

Monte Carlo Simulation of Specific Heat of Alumel Alloy

2020 ◽  
Vol 11 ◽  
pp. 1-4
Author(s):  
Diego Pena Lara ◽  
Hernando Correa Gallego ◽  
Daniel Suescun Diaz
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Specific Heat

Approximation of the structure factor for nonspherical hard bodies using polydisperse spheres

2013 ◽  
Vol 46 (4) ◽  
pp. 1008-1016 ◽  
Author(s):  
Steen Hansen
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Size Distribution ◽  
Structure Factor ◽  
Spherical Symmetry ◽  
Approximate Expression ◽  
Moderate Deviation ◽  
Distribution Functions ◽  
Distance Distribution ◽  
Excluded Volume

A new method for approximation of the structure factor for nonspherical hard bodies is suggested. It is shown that for moderate deviation from spherical symmetry the structure factor may be approximated by the structure factor for a size distribution of spheres. The distribution of spheres should be selected to give agreement between the excluded volume distance distribution functions for the two cases. As the excluded volume distance distribution may be calculated by Monte Carlo simulation for any particle and as a semi-analytical expression exists for the excluded volume distance distribution of a size distribution of spheres, it should be possible to apply the method to any shape of molecule. For ellipsoids of axial ratios between 0.5 and 2.0 a simple approximate expression is given for the parameters of the matching size distribution.

scholarly journals Bulk supercooled water versus adsorbed films on silica surfaces: specific heat by Monte Carlo simulation

2021 ◽  
Author(s):  
Joel Puibasset ◽  
Patrick Judeinstein ◽  
Jean-Marc Zanotti
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Specific Heat ◽  
Supercooled Water ◽  
Bulk Water ◽  
Silica Surfaces ◽  
Amorphous Ice ◽  
Adsorbed Films

Between 150 and 230.6 K, bulk supercooled water freezes upon cooling, and amorphous ice crystallizes upon heating: bulk water thus exists only in its stable ice form. To circumvent this...

THERMODYNAMIC AND MAGNETIC PROPERTIES OF THE ARCHIMEDEAN LATTICES

2005 ◽  
Vol 19 (28) ◽  
pp. 4259-4267 ◽  
Author(s):  
Q. L. ZHANG
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Magnetic Properties ◽  
Free Energy ◽  
Thermodynamic Properties ◽  
Specific Heat ◽  
Internal Energy ◽  
Type 3 ◽  
Ising Spins ◽  
Frustration Effects

We numerically study the thermodynamic properties of two Archimedean lattices1 with Ising spins using Wang–Landau algorithm of the Monte Carlo simulation. The two Archimedean lattices are of the type (3, 122) and Kagomé, for which we are particularly interested in the frustration effects. The internal energy, specific heat, free energy, entropy, magnetization and spin susceptibility are calculated.

scholarly journals Superfluid Transition and Specific Heat of the 2D x-y Model: Monte Carlo Simulation

2021 ◽  
Vol 11 (11) ◽  
pp. 4931
Author(s):  
Phong H. Nguyen ◽  
Massimo Boninsegni
Keyword(s):  
Thin Films ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Transition Temperature ◽  
Specific Heat ◽  
Large Scale ◽  
High Accuracy ◽  
Superfluid Transition ◽  
Square Lattice ◽  
Superfluid Fraction

We present results of large-scale Monte Carlo simulations of the 2D classical x-y model on the square lattice. We obtain high accuracy results for the superfluid fraction and for the specific heat as a function of temperature, for systems of size L×L with L up to 212. Our estimate for the superfluid transition temperature is consistent with those furnished in all previous studies. The specific heat displays a well-defined peak, whose shape and position are independent of the size of the lattice for L>28, within the statistical uncertainties of our calculations. The implications of these results on the interpretation of experiments on adsorbed thin films of 4He are discussed.

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