MICROCANONICAL SIMULATIONS OF ELASTIC-DISK SYSTEMS

Wolfgang Vermöhlen and Nobuyasu Ito
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Wolfgang Vermöhlen: HLRZ at the KFA Jülich, D-52425 Jülich, Germany and Theoretical Physics D, RWTH-Aachen, Germany
Nobuyasu Ito: HLRZ at the KFA Jülich, D-52425 Jülich, Germany and Computing and Information Systems Center, JAERI, Tokai, 319–11, Japan and Department of Applied Physics, Faculty of Engineering, The University of Tokyo, Tokyo 113, Japan

International Journal of Modern Physics C (IJMPC), 1994, vol. 05, issue 06, 1021-1034

Abstract: We performed MD-simulation of two dimensional elastic disks in a microcanonical ensemble and observed the pressure versus the density for the different elastic moduli. As was found in Alder’s simulation, we reconfirmed a plateau in the (pred, ρ*) diagram as an indication for a phase transition with better statistics and observed its dependence on the elastic modulus. This dependence can be explained by the effective density reduction due to the elasticity of the disks. This suggests the universality of the Alder transition of the hard core potential for the contacting elastic potentials. A discussion of a geometrical order parameter|ɸ|2is included.

Keywords: Molecular Dynamics; Elastic/Hard Core Disk; Alder Transition (search for similar items in EconPapers)
Date: 1994
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DOI: 10.1142/S0129183194001124

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