Skip to Main content Skip to Navigation
Journal articles

Caloric Curves and Energy Fluctuations in the Microcanonical Liquid-Gas Phase Transition

Abstract : In this paper we study a microcanonical lattice gas model with a constrained average volume. We show that the caloric curve explicitly depends on the considered transformation of the volume with the excitation energy and so does not bear direct information on the characteristics of the phase transition. Conversely, partial energy fluctuations are demonstrated to be a direct measure of the equation of state. Since the heat capacity has a negative branch in the phase transition region, the presence of abnormally large kinetic energy fluctuations is a signal of the liquid-gas phase transition.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00311563
Contributor : Michel Lion <>
Submitted on : Tuesday, August 19, 2008 - 10:48:54 AM
Last modification on : Monday, July 13, 2020 - 8:14:01 AM

Links full text

Identifiers

Citation

Ph. Chomaz, Valentin Duflot, F. Gulminelli. Caloric Curves and Energy Fluctuations in the Microcanonical Liquid-Gas Phase Transition. Physical Review Letters, American Physical Society, 1985, 85, pp.3587-3590. ⟨10.1103/PhysRevLett.85.3587⟩. ⟨in2p3-00311563⟩

Share

Metrics

Record views

226