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Mainz 2014 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 110: Quantenfeldtheorie 2

T 110.3: Vortrag

Donnerstag, 27. März 2014, 17:15–17:30, P15

Casimir effect on graphene — •M. Bordag — ITP, Universität Leipzig

Graphene developed into a test- and application- field for the methods of quantum field theory. From the linear dispersion of the lower part of the electronic excitations in graphene, the photon polarization tensor composed from the spinor loop is the basic object of interest. It corresponds to the RPA approximation known in solid state theory. Its dependence on parameters like the chemical potential, temperature or dissipation parameter still poses interesting quantum field theoretic problems. Based on the Dirac model for graphene, I discuss the Casimir effect between graphene and a conducting plane, as well as plasmons and their role for the van der Waals forces, in various regions of the parameters.

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