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arXiv · 1505.01271

Excitonic condensation in systems of strongly correlated electrons

Jan Kunes
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Abstract

The idea of exciton condensation in solids was introduced in 1960's with the analogy to superconductivity in mind. While exciton supercurrents have been realized only in artificial quantum-well structures so far, the application of the concept of excitonic condensation to bulk solids leads to a rich spectrum of thermodynamic phases with diverse physical properties. In this review we discuss recent developments in the theory of exciton condensation in systems described by Hubbard-type models. In particular, we focus on the connections to their various strong-coupling limits that have been studied in other contexts, e.g., cold atoms physics. One of our goals is to provide a 'dictionary' which would allow the reader to efficiently combine results obtained in these different fields.

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Jan Kunes. 2015-05-06. Excitonic condensation in systems of strongly correlated electrons. https://doi.org/10.1088/0953-8984/27/33/333201

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