It is presented a theory that describes a spin glass phase at finite temperatures in Kondo lattice systems with an additional RKKY interaction represented by long range, random couplings among… (More)

In the present paper we analyze the critical properties of a quantum spherical spin glass model with short range, random interactions. Since the model allows for rigorous detailed calculations, we… (More)

The Kondo-Spin Glass competition is studied in a theoretical model of a Kondo lattice with an intra-site Kondo-type exchange interaction treated within the mean-field approximation, an inter-site… (More)

We consider the categorization problem in a Hopfield network with an extensive number of concepts p = alpha N and trained with s examples of weight lambda tau, tau = 1,...,s in the presence of… (More)

We show that the effective action of the quantum spherical spin glass is invariant under a generalized form of the BecchiRouet-Stora-Tyutin (BRST) supersymmetry. The Ward identities associated to… (More)