We carry out Density Matrix Renormalization Group (DMRG) calculations on the interchain coupling model for the quasi-one-dimensional organic ferromagnets under open boundary condition. Considering the topology of the system, the two-step DMRG technique is adopted. It is found that in the high...

The Nambu spinor Green’s function approach is applied to studying the proximity effect in ferromagnet/d-wave superconductor (FM/d-wave SC) junctions. It is found that the magnitude of the proximity effect depends to a great extent on the orientation of the SC crystal with respect to the...

A general equilibrium model with consumer-producers, economies of specialization, and transaction costs is developed to explain the land price differential between the urban and rural areas by evolution in division of labor. It shows that as transaction conditions are improved, the equilibrium...

In the paper, an analytical framework with both increasing returns and transaction costs is developed to investigate the general equilibrium with endogenous specialization and division of labor. In this framework, each individual's optimum decision in choosing her pattern of specialization is...