2010/10/20 by Yu. D. Fomin, Fomin, Yu. D., V. N. Ryzhov +1 · 1 citation
Environmental Science · Physics and Astronomy · #Astro and Planetary Science #FOS: Physical sciences #Methane Hydrates and Related Phenomena #Quantum, superfluid, helium dynamics #Soft Condensed Matter (cond-mat.soft) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.1010.4169
10 pages, 10 Figs
arxiv created 2010/10/20 · openalex publication_date 2010/10/20 · arxiv updated 2010/10/21 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
In the present article we carry out a molecular dynamics study of the core-softened system and show that the existence of the water-like anomalies in this system depends on the trajectory in P-ρ-T space along which the behavior of the system is studied. For example, diffusion and structural anomalies are visible along isotherms, but disappears along the isochores and isobars, while density anomaly exists along isochors. We analyze the applicability of the Rosenfeld entropy scaling relations to this system in the regions with the water-like anomalies. It is shown that the validity of the of Rosenfeld scaling relation for the diffusion coefficient also depends on the trajectory in the P-ρ-T space along which the kinetic coefficients and the excess entropy are calculated.