Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Oleg Melichev"'
Autor:
Oleg Melichev, Roberto Percacci
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-23 (2024)
Abstract Poincaré Gauge Theories are a class of Metric-Affine Gravity theories with a metric-compatible (i.e. Lorentz) connection and with an action quadratic in curvature and torsion. We perform an explicit one-loop calculation starting with a sing
Externí odkaz:
https://doaj.org/article/df7f7b1596ac4f8bba9ad140d7aef02e
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-21 (2021)
Abstract We formally prove the existence of a quantization procedure that makes the path integral of a general diffeomorphism-invariant theory of gravity, with fixed total spacetime volume, equivalent to that of its unimodular version. This is achiev
Externí odkaz:
https://doaj.org/article/d2078d72a9214de88b9313e6ce9e3250
Publikováno v:
EPJ Web of Conferences, Vol 191, p 07010 (2018)
We consider Genesis in Horndeski theory as alternative to or completion of inflationary scenario. One of the options free of instabilities at all comological epochs is putative strong coupling regime at the early Genesis stage. We address this issue
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::046cf82ccf98b943b02be1b8860b7d5f
https://doaj.org/article/b4f91c9a07b34779ac9fd1bf98b17c80
https://doaj.org/article/b4f91c9a07b34779ac9fd1bf98b17c80
Autor:
Oleg Melichev, Oleg Evseev
Publikováno v:
EPJ Web of Conferences, Vol 191, p 07012 (2018)
We consider the most general theory of a single scalar field with the second order field equations, the Horndeski theory, in four-dimensional space-time. We show that static, spherically symmetric, asymptotically flat, Lorentzian wormholes are unstab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6d58a05f9adc58aee4f6017f2c65519
https://doi.org/10.1051/epjconf/201819107012
https://doi.org/10.1051/epjconf/201819107012