Speaker
Dr
Vardan Manukyan
(Shirak State University)
Description
We investigate the influence of a cosmic string on the vacuum fluctuations of the electromagnetic field in background of (D+1)-dimensional de Sitter spacetime.
The expectation values (VEVs) of physical characteristics for the Bunch-Davies vacuum state are evaluated. The VEVs are presented in a decomposed form where
the topological parts induced by the cosmic string are explicitly extracted. The asymptotic behavior of the VEVs at large and small distances from the string is discussed.
| Type of contribution | Talk |
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Authors
Dr
Vardan Manukyan
(Shirak State University)
Prof.
Aram Saharian
(Yerevan State University)
Ms
Nvard Saharyan
(Yerevan State Univgersity)
