By means of the second derivative of the ground-state energy for a finite-size system method, the quantum phase transitions (QPTs) for the frustrated vertically asymmetric diamond chain (VADC) are investigated. Our results display the plentiful frustration induced quantum phases in the model....

A methodology was developed to analyze relation-based systems evolving in time by using the fundamental concepts of thermodynamics. The behavior of such systems can be tracked from the scattering matrix which is actually a network of directed vectors (or pathways) connecting subsequent values,...

A simple expression for the first coordination shell of the radial distribution function of the reference hard-sphere fluid is used in combination with Barker–Henderson perturbation theory to obtain the thermodynamic properties of triangular-well fluids. These properties are expressed...

Within the framework of the effective-field theory with correlations, the ferromagnetism of spin-32 Ising model with a transverse crystal field on honeycomb and square and simple cubic lattices is studied. Tricritical phenomena have been observed for the square and simple cubic lattices, but...

We extend the kinetic theory of dilute polyatomic gas mixtures to the case where the particles have various internal energy modes. The present theory is valid when the inernal energy modes are mechanically independent and when the various degrees of freedom of the molecules are at zeroth order...

Taking into account the random scatterings due to random eigenfrequencies and random hopping matrices, we obtain the correlation functions for phonon and sound density fluctuations, which yield three and one entropy fluctuation modes at high frequencies, and three and one thermal conductivity at...

In this paper we calculate the constant pressure specific heat response of a water model with a liquid–liquid critical point. We show how, due to the existence of the critical point, there is a secondary maximum in the specific heat at some temperature T*Th for any pressure PPc, being Th the...

In this paper, a new approach is proposed for simplifying the calculation of flue gas specific heat and specific exergy value in one formulation depending on fuel chemical composition. Combustion products contain different gases such as CO2, SO2, N2, O2, H2O and etc., depending on the burning...

The accurate determination of the thermal properties of biomass materials is particularly important when studying biomass combustion processes. This paper reports a method for the determination of the maximum sampling error and the confidence intervals of thermal properties obtained from...

Thermal conductivity of thin film is analyzed in this paper. It has been shown that at low temperatures, thermal conductivity of film is considerably lower than that of bulk structure. Also, the dependence of activation energy on boundary conditions has been investigated. It has been found that...