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Akademický článek

Secularly growing loop corrections in scalar wave background

Autor: E. T. Akhmedov, O. Diatlyk

Publikováno v: Journal of High Energy Physics, Vol 2020, Iss 10, Pp 1-34 (2020)

Abstract We consider two-dimensional Yukawa theory in the scalar wave background ϕ(t − x). If one takes as initial state in such a background the scalar vacuum corresponding to ϕ = 0, then loop corrections to a certain part of the Keldysh propaga

Externí odkaz: https://doaj.org/article/5bb2bf38dd954af59271a4dd9f97cc96

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Akademický článek

Thermalization with Non-Zero Initial Anomalous Quantum Averages

Autor: Emil T. Akhmedov, Kirill Kazarnovskii

Publikováno v: Universe, Vol 8, Iss 3, p 162 (2022)

We discuss the thermalization process in kinetic approximation in the presence of non-zero initial anomalous quantum expectation values on top of an initial non-Planckian (non-thermal) level population. In particular, we derive a system of “kinetic

Externí odkaz: https://doaj.org/article/05e5e5a9481b4bd3b4fa2fe3916f4bca

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Akademický článek

Ultraviolet phenomena in AdS self-interacting quantum field theory

Autor: Emil T. Akhmedov, Ugo Moschella, Fedor K. Popov

Publikováno v: Journal of High Energy Physics, Vol 2018, Iss 3, Pp 1-19 (2018)

Abstract We study the one-loop corrections to the four-point function in the Anti de Sitter space-time for a ϕ 4 field theory. Our calculation shows the existence of non-local counterterms which however respect the AdS isometry. Our arguments are qu

Externí odkaz: https://doaj.org/article/a0b8a6a12c7b4c6eae2cccbe7dab51d9

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Isometry invariance of exact correlation functions in various charts of Minkowski and de Sitter spaces

Autor: E. T. Akhmedov, I. V. Kochergin, M. N. Milovanova

Publikováno v: Physical Review

We consider quantum field theory with selfinteractions in various patches of Minkowski and de Sitter space-times. Namely, in Minkowski space-time we consider separately right (left) Rindler wedge, past wedge and future wedge. In de Sitter space-time

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bad9bf171eee058d34724cd773d61ca
https://doi.org/10.1103/physrevd.107.105015

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Backreaction issue for the black hole in de Sitter spacetime

Autor: Emil T. Akhmedov, Kirill V. Bazarov

Publikováno v: Physical Review

We consider a quantum real massive scalar field in the de Sitter–Schwarzschild spacetime background. To have an analytic headway we study in detail the two-dimensional case, assuming that the situation in four dimensions will not be much different

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9718842c9070ff40858ddd8e99a4491c
http://repo.scoap3.org/api

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