On the Sign of Local Temperature in Molecules

doi:10.3390/e1010004

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Entropy 1999, 1(1), 4-8; doi:10.3390/e1010004

Communication

On the Sign of Local Temperature in Molecules

István Kolossváry^1,2

¹ Department of Chemical Information Technology, Technical University of Budapest, Szt. Gellért tér 4, Budapest, H-1111, Hungary ² Novartis Institute for Biomedical Research, 556 Morris Ave, Summit, NJ 07901, USA

Received: 26 February 1999 / Accepted: 24 March 1999 / Published: 26 March 1999

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Abstract: Lin proposed earlier based on qualitative considerations that electronic motion was associated with negative absolute temperature. Here, a local temperature formula is proposed for electronic motion in atoms and molecules, which allows the existence of negative absolute temperature in a local sense in thermodynamic equilibrium. The proposed temperature formula is a function of total energy density ε(r), entropy density s(r) and electron density ρ(r).

Keywords: negative absolute temperature; local temperature; entropy density; energy density; electron density

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MDPI and ACS Style

Kolossváry, I. On the Sign of Local Temperature in Molecules. Entropy 1999, 1, 4-8.

AMA Style

Kolossváry I. On the Sign of Local Temperature in Molecules. Entropy. 1999; 1(1):4-8.

Chicago/Turabian Style

Kolossváry, István. 1999. "On the Sign of Local Temperature in Molecules." Entropy 1, no. 1: 4-8.

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