Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Sergey Paston"'
Publikováno v:
Universe, Vol 8, Iss 12, p 635 (2022)
We study a perturbation theory for embedding gravity equations in a background for which corrections to the embedding function are linear with respect to corrections to the flat metric. The remaining arbitrariness after solving the linearized field e
Externí odkaz:
https://doaj.org/article/fe839b0542ed45c7b2fc339cade06525
Autor:
Sergey Paston, Taisiia Zaitseva
Publikováno v:
Universe, Vol 7, Iss 12, p 477 (2021)
Nontrivial isometric embeddings for flat metrics (i.e., those which are not just planes in the ambient space) can serve as useful tools in the description of gravity in the embedding gravity approach. Such embeddings can additionally be required to h
Externí odkaz:
https://doaj.org/article/14aa9d1d9b664645936625203d13983c
Autor:
Roman Ilin, Sergey Paston
Publikováno v:
Universe, Vol 6, Iss 10, p 173 (2020)
The current paper is devoted to the investigation of the general form of the energy–momentum pseudotensor (pEMT) and the corresponding superpotential for the wide class of theories. The only requirement for such a theory is the general covariance o
Externí odkaz:
https://doaj.org/article/7b90915e885c4ef58b4bd2d0aa27aa0c
Autor:
Sergey Paston
Publikováno v:
Universe, Vol 6, Iss 10, p 163 (2020)
Regge-Teitelboim embedding gravity is the modified gravity based on a simple string-inspired geometrical principle—our spacetime is considered here as a 4-dimensional surface in a flat bulk. This theory is similar to the recently popular theory of
Externí odkaz:
https://doaj.org/article/bb9c324ebd1b41e18c50ff84595d2270
Publikováno v:
Symmetry, Vol 12, Iss 5, p 722 (2020)
We consider the approach to gravity in which four-dimensional curved spacetime is represented by a surface in a flat Minkowski space of higher dimension. After a short overview of the ideas and results of such an approach we concentrate on the study
Externí odkaz:
https://doaj.org/article/d25eed61cb2e47978a8ea06f7ddf6c6a
Publikováno v:
Symmetry, Vol 12, Iss 2, p 240 (2020)
We discuss field theories appearing as a result of applying field transformations with derivatives (differential field transformations, DFTs) to a known theory. We begin with some simple examples of DFTs to see the basic properties of the procedure.
Externí odkaz:
https://doaj.org/article/bfb94a98163a40bc98f603c27241cd1b
Publikováno v:
Symmetry, Vol 11, Iss 7, p 841 (2019)
We study the problem of construction of global isometric embedding for spherically symmetric black holes with negative cosmological constant in various dimensions. Firstly, we show that there is no such embedding for 4D RN-AdS black hole in 6D flat a
Externí odkaz:
https://doaj.org/article/ecb8fa8dfdf7467f90bac66835fe03b6
The renormalization problem of (2+1)-dimensional Yang-Mills theory quantized on the light front is considered. Extra fields analogous to those used in Pauli-Villars regularization are introduced to restore perturbative equivalence between such quanti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fe3703b35b7fcaa8c84d14b199911bd
http://arxiv.org/abs/1505.00272
http://arxiv.org/abs/1505.00272
Autor:
Kuptsov, Stanislav1 (AUTHOR), Ioffe, Mikhail2 (AUTHOR), Manida, Sergey2 (AUTHOR), Paston, Sergey2 (AUTHOR) pastonsergey@gmail.com
Publikováno v:
Universe (2218-1997). Dec2022, Vol. 8 Issue 12, p635. 13p.
Autor:
Stavrinos, Panayiotis1 (AUTHOR) pstavrin@math.uoa.gr, Saridakis, Emmanuel2,3,4 (AUTHOR)
Publikováno v:
Universe (2218-1997). Aug2022, Vol. 8 Issue 8, p415-415. 4p.