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The impact of tensorial temperature on equilibrium thermodynamics

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Abstract

Thermodynamic temperature is a scalar. However, the connection with the kinetic energy tensor in statistical mechanics leaves open the possibility to define a tensorial temperature. This concept has sometimes been used to simulate isothermal conditions in out-of-equilibrium systems. Here, we show, by studying a sessile water droplet, that a tensorial temperature leads to the wrong thermodynamics, or, in other words, the equilibrium isothermal ensemble generated using a tensorial temperature is not the canonical one, with interfacial free energies that can differ up to 40% from the correct ones.

Graphical abstract: The impact of tensorial temperature on equilibrium thermodynamics

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Publication details

The article was received on 30 Mar 2018, accepted on 04 Jun 2018 and first published on 04 Jun 2018


Article type: Communication
DOI: 10.1039/C8CP02046A
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
  • Open access: Creative Commons BY license
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    The impact of tensorial temperature on equilibrium thermodynamics

    M. Sega and P. Jedlovszky, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C8CP02046A

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