The thermal entropy density of spacetime

Abstract

We introduce the notion of thermal entropy density, and first obtain the thermal entropy density of any arbitrary spacetime without firstly assuming a temperature or a horizon. The results indicate that gravity possesses thermal effects or therm entropy density possesses effects of gravity. The results also imply that, besides gravity, the thermal entropy density can also be geometrized.

4 pages

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Cited by in corpus (5)

• Horizon thermodynamics in $f(R)$ theory
• General proof of the entropy principle for self-gravitating fluid in static spacetimes
• Is gravity entropic force?
• Entropy and Energy of Static Spherically Symmetric Black Hole in $f(R)$ theory
• Thermodynamics of black hole in $D$-dimensional $f(R)$ theory