"Structural Models of Wage and Employment Dynamics" contains selected papers from a conference held in honour of Professor Dale T. Mortensen upon the occasion of his 65th birthday. The papers are on some of Professor Dale T. Mortensen's current research topics: The development of equilibrium dynamic models designed to account for wage dispersion and the time series behaviour of job and worker flows. The conference is the sixth in a series. From the beginning there has been a close interplay among economic theorists, econometricians, and applied economists. This book also has a section with theoretical papers as well as sections wtih micro- and macro-econometric papers. These conferences have had significant influence on how we think about public policy in the labour market, and what kinds of data would be needed to answer questions about these policies.
*Contributions to Economic Analysis was established in 1952
*The series purpose is to stimulate the international exchange of scientific information
*The series includes books from all areas of macroeconomics and microeconomics

We review the Dynamical Mean Field Theory of the Holstein Polaron Problem in order to compute the small polaron Green's functions. The Renormalized Perturbation Expansion (RPE) play a central role and allows to compute all the local and non local Green's functions for the electron and the small polaron, for finite or infinite size systems, with periodic or non periodic boundary conditions. We introduce a restricted basis for the phonons to study the decoupling scheme of the Green's functions in a Local Approximation via exact diagonalizations. As a bonus, we furnish all the C/C++ programs built step by step, from a pedagogical point of view.

This book is a short introduction to the Dynamical Mean-Field Theory for strongly correlated electrons. Its purpose is to focus on various local decoupling schemes in order to derive a self-consistent approximation and to map the lattice problem onto an impurity problem. Hubbard, Holstein, and Falicov-Kimball models are mainly used to provide examples of calculation. Numerous basic c/c++ programs are given along the book to develop confidence in computing actual numerical results.

We show how to set up a Cellular Dynamical Mean Field Theory for the Holstein's polaron problem using the exact solution of a cluster of n sites embedded in a Weiss's field. We show that a restricted basis, that allows excitations of phonons only for n sites at a time, reproduces exactly the equations of the n-site Dynamical Mean Field Theory, and enables to check the proposed decoupling scheme of the Green's functions via Exact Numerical Diagonalizations. We introduce a real space formulation of the Cellular Dynamical Mean Field Theory that applies to any lattice with or without periodic boundary conditions and that allows to partition the lattice into different kinds of clusters.