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Ordering and phase transitions in random-field Ising systemsAn exact analysis of the Ising model with infinite-range interactions in a random field and a local mean-field theory in three dimensions is carried out leading to a phase diagram with several coexistence surfaces and lines of critical points. The results show that the phase diagram depends crucially on whether the distribution of random fields is symmetric or not. Thus, Ising-like phase transitions in a porous medium (the asymmetric case) are in a different universality class from the conventional random-field model (symmetric case).
Document ID
19910069044
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Maritan, Amos
(Pennsylvania State Univ. University Park, PA, United States)
Swift, Michael R.
(Pennsylvania State Univ. University Park, PA, United States)
Cieplak, Marek
(Pennsylvania State Univ. University Park, PA, United States)
Chan, Moses H. W.
(Pennsylvania State Univ. University Park, PA, United States)
Cole, Milton W.
(Pennsylvania State Univ. University Park, PA, United States)
Banavar, Jayanth R.
(Pennsylvania State University University Park, United States)
Date Acquired
August 14, 2013
Publication Date
September 30, 1991
Publication Information
Publication: Physical Review Letters
Volume: 67
ISSN: 0031-9007
Subject Category
Thermodynamics And Statistical Physics
Accession Number
91A53667
Distribution Limits
Public
Copyright
Other

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