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Microcanonical Analysis of Exactness of the Mean-Field Theory in Long-Range Interacting Systems
Takashi Mori
Classical spin systems with nonadditive long-range interactions are studied in the microcanonical ensemble. It is expected that the entropy of such a system is identical to that of…
Critical temperature and correlation length of an elastic interaction model for spin-crossover materials
Taro Nakada, Takashi Mori, Seiji Miyashita +4
It has previously been pointed out that the coexistence of infinite-range and short-range interactions causes a system to have a phase transition of the mean-field universality cla…
Instability of the mean-field states and generalization of phase separation in long-range interacting systems
Takashi Mori
Equilibrium properties of long-range interacting systems on lattices are investigated. There was a conjecture by Cannas et. al. that the mean-field theory is exact for spin systems…
Crossover between a Short-range and a Long-range Ising model
Taro Nakada, Per Arne Rikvold, Takashi Mori +2
Recently, it has been found that an effective long-range interaction is realized among local bistable variables (spins) in systems where the elastic interaction causes ordering of…