| Abstract: | Conclusions We have investigated the critical behavior of the Hubbard model with attraction. To investigate the critical behavior of the model with repulsion, it is sufficient to use a unitary electron-hole transformation [3,8], and then the SCP correlation function will correspond to the spin-wave correlation function (the parameters of the models can be readily recalculated).The quasione-dimensional generalization of the investigated system can be used as a model of a high-temperature superconductor with  chemical pairing mechanism [16,25].Leningrad Branch, V. A. Steklov Mathematics Institute, USSR Academy of Sciences. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 82, No. 3, pp. 331–348, March, 1990. |
