Browsing by Author "Berker, A. Nihat"
Now showing items 21-22 of 22
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Renormalization-group theory of the Heisenberg model in d dimensions
Tunca, Egemen; Berker, A. Nihat (Elsevier, 2022)The classical Heisenberg model has been solved in spatial d dimensions, exactly in d = 1 and by the Migdal-Kadanoff approximation in d > 1, by using a Fourier-Legendre expansion. The phase transition temperatures, the ... -
Spin-s spin-glass phases in the d=3 Ising model
Artun, E. Can; Berker, A. Nihat (Amer Physical Soc, 2021)All higher-spin (s >= 1/2) Ising spin glasses are studied by renormalization-group theory in spatial dimension d = 3, exactly on a d = 3 hierarchical model and, simultaneously, by the Migdal-Kadanoff approximation on the ...