Universal interrelation between dynamics and thermodynamics and a dynamically driven “c” transition in fluids
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Volume
104
Pagination
034108 - 034108
Publisher
DOI
10.1103/physreve.104.034108
Journal
Physical Review E
Issue
ISSN
2470-0045
Metadata
Show full item recordAbstract
Our very wide survey of the supercritical phase diagram and its key properties reveals a universal interrelation between dynamics and thermodynamics and an unambiguous transition between liquidlike and gaslike states. This is seen in the master plot showing a collapse of the data representing the dependence of specific heat on key dynamical parameters in the system for many different paths on the phase diagram. As a result, the observed transition is path independent. We call it a “c” transition due to the c-shaped curve parametrizing the dependence of the specific heat on key dynamical parameters. The c transition has a fixed inversion point and provides a new structure to the phase diagram, operating deep in the supercritical state (up to, at least, 2000 times the critical pressure and 50 times the critical temperature). The data collapse and path independence as well as the existence of a special inversion point on the phase diagram are indicative of either of a sharp crossover or a new phase transition in the deeply supercritical state.
Authors
Cockrell, C; Brazhkin, VV; Trachenko, KCollections
- Physics and Astronomy [1343]