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Isochoric Specific Heat in the Dual Model of Liquids

Leonardo SpA, Electronics Division, Defense Systems LoB, Via Monterusciello 75, 80078 Pozzuoli, Italy
Academic Editor: Enrico Bodo
Liquids 2021, 1(1), 77-95; https://doi.org/10.3390/liquids1010007
Received: 31 October 2021 / Revised: 25 November 2021 / Accepted: 26 November 2021 / Published: 1 December 2021
(This article belongs to the Section Physics of Liquids)
We continue in this paper to illustrate the implications of the dual model of liquids (DML) by deriving the expression for the isochoric specific heat as a function of the collective degree of freedom available at a given temperature and analyzing its dependence on temperature. Two main tasks have been accomplished. First, we show that the expression obtained for the isochoric specific heat in the DML is in line with the experimental results. Second, the expression has been compared with the analogous one obtained in another theoretical dual model of the liquid state, the phonon theory of liquid thermodynamics. This comparison allows providing interesting insights about the number of collective degrees of freedom available in a liquid and the value of the isobaric thermal expansion coefficient, two quantities that are related to each other in this framework. View Full-Text
Keywords: liquid model; phonons in liquids; instantaneous normal modes; mesoscopic model of liquids; phonon–particle interaction; specific heat liquid model; phonons in liquids; instantaneous normal modes; mesoscopic model of liquids; phonon–particle interaction; specific heat
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MDPI and ACS Style

Peluso, F. Isochoric Specific Heat in the Dual Model of Liquids. Liquids 2021, 1, 77-95. https://doi.org/10.3390/liquids1010007

AMA Style

Peluso F. Isochoric Specific Heat in the Dual Model of Liquids. Liquids. 2021; 1(1):77-95. https://doi.org/10.3390/liquids1010007

Chicago/Turabian Style

Peluso, Fabio. 2021. "Isochoric Specific Heat in the Dual Model of Liquids" Liquids 1, no. 1: 77-95. https://doi.org/10.3390/liquids1010007

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