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Negative heat capacity at phase-separation in macroscopic systems | | D.H.E.Gross
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19 Aug 2005 | | Subject: | Statistical Mechanics | cond-mat.stat-mech astro-ph nucl-th | | Abstract: | Systems with long-range as well with short-range interactions should necessarily have a convex entropy S(E) at proper phase transitions of first order, i.e. when a separation of phases occurs. Here the microcanonical heat capacity c(E)= -frac{(partial S/partial E)^2}{partial^2S/partial E^2} is negative. This should be observable even in macroscopic systems when energy fluctuations with the surrounding world can be sufficiently suppressed. | | Source: | arXiv, cond-mat/0508455 | | Services: | Forum | Review | PDF | Favorites | |
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