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Nosotros usamos el grupo de renormalización de la matriz densidad para estudiar el estado base de los átomos de Iterbio (171Yb) para el modelo de red de Hund, donde los átomos delocalizados son confinados en una superred óptica unidimensional y son un tercio de los sitios de la red. Nosotros hallamos una transición de fase magnética paramagnética-ferromagnética para algunos valores del potencial. El punto crítico del acoplamiento decrece cuando el potencial de la superred disminuye.
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