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15 - Many-body effects in graphene

Published online by Cambridge University Press:  24 May 2020

Mikhail I. Katsnelson
Mikhail I. Katsnelson
Affiliation:
Radboud Universiteit Nijmegen
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Summary

In this chapter, we discuss how to build effective many-body models starting from first principles electronic structure calculations and apply this general approach to graphene. We present quantitative results for the Fermi velocity renormalization, which were preliminary announced in Chapter 8. After that, we discuss many-body effects in graphene electron spectrum, static screening, and optical conductivity based on the results of lattice quantum Monte Carlo simulations. At the end, we consider many-body renormalization of minimal conductivity in graphene within the concept of environment-induced suppression of quantum tunneling.

Keywords

Correlation effectsquantum Monte Carlometal-insulator transitionscreened interactionPeierls–Feynman–Bogolyubov variational principleCaldeira–Leggett modelminimal conductivity
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Chapter
Information
The Physics of Graphene , pp. 389 - 400
Publisher: Cambridge University Press
Print publication year: 2020

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