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Article

Statistical Mechanics at Strong Coupling: A Bridge between Landsberg’s Energy Levels and Hill’s Nanothermodynamics

1
Department of Teacher Education, Norwegian University of Science and Technology, 7491 Trondheim, Norway
2
Department of Condensed Matter Physics, University of Barcelona, 08007 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(12), 2471; https://doi.org/10.3390/nano10122471
Received: 21 November 2020 / Revised: 3 December 2020 / Accepted: 6 December 2020 / Published: 10 December 2020
(This article belongs to the Special Issue Nanoscale Thermodynamics)
We review and show the connection between three different theories proposed for the thermodynamic treatment of systems not obeying the additivity ansatz of classical thermodynamics. In the 1950s, Landsberg proposed that when a system comes into contact with a heat bath, its energy levels are redistributed. Based on this idea, he produced an extended thermostatistical framework that accounts for unknown interactions with the environment. A decade later, Hill devised his celebrated nanothermodynamics, where he introduced the concept of subdivision potential, a new thermodynamic variable that accounts for the vanishing additivity of increasingly smaller systems. More recently, a thermostatistical framework at strong coupling has been formulated to account for the presence of the environment through a Hamiltonian of mean force. We show that this modified Hamiltonian yields a temperature-dependent energy landscape as earlier suggested by Landsberg, and it provides a thermostatistical foundation for the subdivision potential, which is the cornerstone of Hill’s nanothermodynamics. View Full-Text
Keywords: thermodynamics at strong coupling; temperature-dependent energy levels; thermodynamics of small systems; nanothermodynamics thermodynamics at strong coupling; temperature-dependent energy levels; thermodynamics of small systems; nanothermodynamics
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MDPI and ACS Style

de Miguel, R.; Rubí, J.M. Statistical Mechanics at Strong Coupling: A Bridge between Landsberg’s Energy Levels and Hill’s Nanothermodynamics. Nanomaterials 2020, 10, 2471. https://doi.org/10.3390/nano10122471

AMA Style

de Miguel R, Rubí JM. Statistical Mechanics at Strong Coupling: A Bridge between Landsberg’s Energy Levels and Hill’s Nanothermodynamics. Nanomaterials. 2020; 10(12):2471. https://doi.org/10.3390/nano10122471

Chicago/Turabian Style

de Miguel, Rodrigo, and J. M. Rubí 2020. "Statistical Mechanics at Strong Coupling: A Bridge between Landsberg’s Energy Levels and Hill’s Nanothermodynamics" Nanomaterials 10, no. 12: 2471. https://doi.org/10.3390/nano10122471

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