Calendario Attività

Parity anomaly in four dimensions.

Categoria
Seminario
Data
14 Novembre 2017 15:30 - 17:00
Luogo
14 - 15 IV piano St. 9
Affiliation
CMCC-Universidade Federal do ABC, Santo Andre, S.P., Brazil

We discuss a theory of fermions which are trapped inside the four-manifold with a boundary, imposing the local bag boundary conditions, which ensure a vanishing current through the boundary. Such a setup naturally fits the situation of a practical interest: quasi particles of the spin 1/2 in the solid state physics, which are confined inside a sample of a finite size. We demonstrate that the parity-odd part of the effective quantum action is nontrivial and it is given by the topological Chern-Simons term, which lives on the boundary.

 
 

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  • 14 Novembre 2017 15:30 - 17:00

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