Parity effects in eigenvalue correlators, parametric and crossover correlators in random matrix models: Application to mesoscopic systems

摘要

This paper summarizes some work that I have been doing on eigenvalue correlators of random matrix models which show some interesting behavior. First we consider matrix models with gaps in their spectrum or density of eigenvalues. The densitya€“density correlators of these models depend on whether e?‘?, where e?‘? is the size of the matrix, takes even or odd values. The fact that this dependence persists in the large e?‘? thermodynamic limit is an unusual property and may have consequences in the study of one electron effects in mesoscopic systems. Secondly, we study the parametric and cross correlators of the Harish Chandraa€“Itzyksona€“Zuber matrix model. The analytic expressions determine how the correlators change as a parameter (e.g. the strength of a perturbation in the Hamiltonian of the chaotic system or external magnetic ???eld on a sample of material) is varied. The results are relevant for the conductance ???uctuations in disordered mesoscopic systems.