Fröhlich Polarons. Lecture course including detailed theoretical derivations

Abstract

In the present course, an overview is presented of the fundamentals of continuum-polaron physics, which provide the basis of the analysis of polaron effects in ionic crystals and polar semiconductors. These Lecture Notes deal with "large", or "continuum", polarons, as described by the Fröhlich Hamiltonian. The emphasis is on the polaron optical absorption, with detailed mathematical derivations.

arXiv comment264 pages, 25 figures. Based on a course presented by the author at the International School of Physics Enrico Fermi, CLXI Course, "Polarons in Bulk Materials and Systems with Reduced Dimensionality", Varenna, Italy, 21.6. - 1.7.2005

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• Polaronic effects in monolayer black phosphorus on polar substrates
• Variational approaches to quantum impurities: from the Fröhlich polaron to the angulon
• Direct integral description of angulon
• Environment-limited transfer of angular momentum in Bose liquids
• A model for reducing the angulon operator
• Renormalization of excitonic properties by polar phonons