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cond-mat.stat-mech2025
XY-Ashkin-Teller Phase Diagram in d=3
Alpar Turkoglu, A. Nihat Berker
The phase diagram of the Ashkin-Tellerized XY model in spatial dimension is calculated by renormalization-group theory. In this system, each site has two spins, each spin bei…
cond-mat.stat-mech2025★ 6 cited
Global Ashkin-Teller Phase Diagrams in Two and Three Dimensions: Multicritical Bifurcation versus Double Tricriticality Endpoint
Ibrahim Kecoglu, A. Nihat Berker
The global phase diagrams of the Askin-Teller model are calculated in d=2 and 3 by renormalization-group theory that is exact on the hierarchical lattice and approximate on the rec…