Speaker
David Simonyan
(Yerevan State University)
Description
The vacuum expectation value of the current density for a charged scalar field with general curvature coupling is investigated in locally de Sitter spacetime with toroidally compactified spatial dimensions and in the presence of boundaries. In addition, the presence of a classical constant gauge field is assumed. General quasiperiodic boundary condition are imposed along compact dimensions and on the boundaries the field obeys Robin conditions. For the Bunch-Davies vacuum state the contribution of the boundaries is separated in the total current density and its behavior is studied in various asymptotic regions.
Authors
Prof.
Aram Saharian
(Yerevan State University )
David Simonyan
(Yerevan State University)
