Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-07-21
Physics
Condensed Matter
Strongly Correlated Electrons
Lecturenotes for "XI Training Course in the Physics of Strongly Correlated Systems", Vietri sul Mare, Italy, 2-13 October 2006
Scientific paper
Classically the interaction between light and matter is given by the Maxwell relations. These are briefly reviewed and will be used as a basis to discuss several techniques that are used in optical spectroscopy. We then discuss the quantum mechanical description of the optical conductivity based on the Kubo formalism. This is used as a basis to understand how strong correlation effects can be observed using optical techniques. We will discuss the use of sum rules in the interpretation of optical experiments. Finally, we describe the effect of including interactions between electronic and collective degrees of freedom on optical spectra.
der Marel Dirk van
Heumen Erik van
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