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Conference on "Variational and spectral methods in Quantum Field Theory"
Organizers: Volker Bach (Braunschweig), Maria J. Esteban (CNRS), Mathieu Lewin (CNRS), Eric Séré (Paris-Dauphine)


Christian Hainzl (Tübingen, Germany): "Ground state properties of graphene in Hartree-Fock theory"
Monday 22 April 2013, 14:00 - 14:45
Amphi Hermite


In this talk I will discuss the Hartree-Fock approximation of graphene in infinite volume, with instantaneous Coulomb interactions.

First I will explain how to construct the translation-invariant ground state. Due to the exchange term, the resulting effective Fermi velocity is logarithmically divergent at zero momentum. Then I will discuss the existence of ground states in the presence of local defects and some properties of the associated nonlinear response.

Joint work with M. Lewin and C. Sparber.