3 papers
hep-th2026
Sine-Gordon solitons in AdS, dS and other hyperbolic spaces
E. T. Akhmedov, D. V. Diakonov
We find infinitely many soliton-like solutions in a deformation of the sine-Gordon theory in -dimensional (anti-de Sitter) spacetime for , as well as s…
hep-th2025
Lessons from the Klein paradox
E. T. Akhmedov, D. V. Diakonov, V. I. Lapushkin +1
We re-examine the Klein paradox from a many-particle perspective in quantum field theory. Specifically, we compute the expectation value of the particle current induced by a suffic…
hep-th2024
Light fields in various patches of de Sitter space-time
E. T. Akhmedov, V. I. Lapushkin, D. I. Sadekov
We start with the consideration of the loop effects for light fields with non-zero mass in the expanding Poincaré patch of de Sitter space-time. We derive the Dyson-Schwinger equa…