arXiv subjects

Fabio Peluso

Publications and source records attributed to Fabio Peluso.

5 recordsLinked to original sources

arXiv2026

The mesoscopic foundations of non equilibrium thermodynamics and the arrow of time in the Dual Model of Liquids

This manuscripts has two goals. The first goal is to show that the interaction in the Dual Model of Liquids between the solidlike molecule aggregates and the lattice excitations is appropriate to represent the link between the behaviour at macroscopic scale of normal liquids and the physical processes characterizing those systems at mesoscopic scale. The second goal is to show that the duality allows identifying a time arrow on the mesoscopic scale in liquids. The interaction of quanta of elastic energy with the molecular clusters introduces a privileged direction, which is relevant in time dependent and dissipative macroscopic processes, although the interaction remains temporally reversible

cond-mat.stat-mech↗

arXiv2025

How does heat propagate in Liquids?

In this paper, we illustrate the consequences and implications of the Dual Model of Liquids (DML) by applying it to heat propagation.

cond-mat.soft↗

arXiv2025

Thermo-Mechanical and Mdchano-Thermal Effects in Liquids Explained by means of the Dual Model of Liquids

We pursue to illustrate the capabilities of the Dual Model of Liquids showing that it may explain crossed effects notable in Non-Equilibrium Thermodynamics. The aim of the paper is to demonstrate that the DML may correctly model the thermodiffusion, in particular getting formal expressions for positive and negative Soret coefficient, and another unexpected mechano-thermal effect recently discovered in liquids submitted to shear strain, for which the first-ever theoretical interpretation is provided.

cond-mat.soft↗

arXiv2025

Mesoscopic Collective Dynamics in Liquids and the Dual Model

A microscopic vision is presented of a Dual Model of Liquids from a solid picture. Among the novelties of this model is that it provides quantitative expressions of various extensive thermophysical properties. The introduction of the statistical number of excited degrees of freedom (DoF) allows bypassing the problem of other dual models which are sometimes unable to correctly reproduce the expressions for those thermophysical quantities showing deviations due to the activation or deactivation of internal DoF. The interpretation of the relaxation times is given, their Order of Magnitude calculated and the way in which these times are involved in the different phases of the collective dynamics of liquids is discussed. A comparison is provided with results obtained in the frame of another phononic model of liquids, as well as with the predictions for the viscoelastic transition regions and with systems exhibiting kgap. In the last part of the paper, theoretical insights and experiments are suggested as potential directions for future research and development.

cond-mat.mes-hall↗

arXiv2024

The Viscosity of Liquids in the Dual Model

A reliable model of viscosity in liquids using a dual liquid model framework is developed. The analytical expression arrived at exhibits the correct T-dependence Arrhenius-like. It is compared with the values of viscosity for water with acceptable accuracy and those related to the mechano-thermal effect in liquids under low-frequency shear. It has even been shown that a numerical approach of viscosity in liquids dealt with as dual systems provides good agreement with experimental data. The expression of viscosity shows an explicit dependence upon the sound velocity and the collective vibratory degrees of freedom excited at a given temperature. The terms involved depend upon the Boltzmann and Planck constants. Finally, the physical model is coherent with the postulate of microscopic reversibility as well as with the time's arrow for macroscopic dissipative mechanisms.

cond-mat.mes-hall↗