The impact of tensorial temperature on equilibrium thermodynamics

Marcello Sega, P. Jedlovszky

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)16910-16912
Number of pages3
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number25
DOIs
Publication statusPublished - Jan 1 2018

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thermodynamic equilibrium
Thermodynamics
Temperature
thermodynamics
Statistical mechanics
temperature
statistical mechanics
Kinetic energy
leaves
Free energy
Tensors
kinetic energy
free energy
tensors
scalars
Water
water

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

The impact of tensorial temperature on equilibrium thermodynamics. / Sega, Marcello; Jedlovszky, P.

In: Physical Chemistry Chemical Physics, Vol. 20, No. 25, 01.01.2018, p. 16910-16912.

Research output: Contribution to journalArticle

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