2014/03/31 by Igor Iosilevskiy · 1 citation
Physics and Astronomy · #nucl-th #physics.plasm-ph
published as "Physics of Extreme States of Matter", Eds. V. Fortov et al., IPCP RAS Publishing, Chernogolovka, Russia, 2013, PP. 136-140 · 7 pages, 8 figures, 26 refs. Presented in Int. Conference "Physics of Extreme States of Matter" (Elbrus-2013), 1-6 February 2013, Elbrus, Russia // This paper has been withdrawn by the author due to non-correct exposition of figures 1,2,3,5,6 // Exposition of figures 1,2,3,5,6 was corrected
arxiv created 2014/05/01 · arxiv updated 2014/05/02
Features of Gas-Liquid (GL) and Quark-Hadron (QH) phase transitions (PT) in dense nuclear matter are under discussion in comparison with their terrestrial counterparts, e.g. so-called "plasma" PT in shock-compressed hydrogen, nitrogen, xenon etc. Both, GLPT and QHPT, when being represented in widely accepted T - μ diagram, are often considered as similar, i.e. amenable to one-to-one mapping by simple scaling. It is argued that this impression is illusive and that GLPT and QHPT belong to different classes: namely, GLPT is typical enthalpic (VdW-like) PT while QHPT ("deconfinement-driven") is typical entropic PT like hypothetical ionization- and dissociation-driven phase transitions in hot and dense hydrogen, nitrogen etc. of megabar pressure range. Newly introduced terms "enthalpic" and "entropic" PT, are defined and clarified in their illustrative comparison successively from T - μ to P - T and P - V phase diagrams for GLPT and QHPT from one side (dense nuclear plasma) vs. GLPT and "plasma" (or "dissociative") PTs from another side (electromagnetic plasma). Fundamental difference in topology of binodal and spinodal curves for enthalpic and entropic phase transitions are discussed and illustrated. Multilayered structure of thermodynamic surfaces T(P,V), U(P,V), S(P,V) etc. as basic origin for intrinsic anomalous properties of all entropic PTs, is stressed.