Volume 113, Number 6, March 2016
|Number of page(s)||6|
|Published online||13 April 2016|
A Green's function approach to the Casimir effect on topological insulators with planar symmetry
1 Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México 04510 México, Distrito Federal, México
2 Universidad Andres Bello, Departamento de Ciencias Fisicas, Facultad de Ciencias Exactas Av. Republica 220, Santiago, Chile
Received: 6 February 2016
Accepted: 31 March 2016
We investigate the Casimir stress on a topological insulator (TI) between two metallic plates. The TI is assumed to be joined to one of the plates and its surface in front of the other is covered by a thin magnetic layer, which turns the TI into a full insulator. We also analyze the limit where one of the plates is sent to infinity yielding the Casimir stress between a conducting plate and a TI. To this end we employ a local approach in terms of the stress-energy tensor of the system, its vacuum expectation value being subsequently evaluated in terms of the appropriate Green's function. Finally, the construction of the renormalised vacuum stress-energy tensor in the region between the plates yields the Casimir stress. Numerical results are also presented.
PACS: 03.70.+k – Theory of quantized fields / 03.50.De – Classical electromagnetism, Maxwell equations / 11.15.Yc – Chern-Simons gauge theory
© EPLA, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.