Abstract
The geometric entropy arising from partitioning space in a fluid ‘‘field theory’’ is shown to be linearly proportional to the area of an excluded region. The coefficient of proportionality is related to surface tension by a thermodynamic argument. Good agreement with experimental data is obtained for a number of fluids. The calculation employs a density-matrix formalism developed previously for studying the origin of black hole entropy. This approach may lead to a practical technique for the evaluation of thermodynamic quantities with important entropic components. © 1996 The American Physical Society.
- Received 27 March 1995
DOI:https://doi.org/10.1103/PhysRevE.53.3738
©1996 American Physical Society