Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Christian F. Steinwachs"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 5, Pp 1-13 (2021)
Abstract We propose an extension of the scalaron-Higgs model by a non-minimal coupling of the Standard Model Higgs boson to the quadratic Ricci scalar resulting in a Higgs-dependent scalaron mass. The model predicts a successful stage of effective si
Externí odkaz:
https://doaj.org/article/902611779864442c9ea38a9c2382aa34
Autor:
Christian F. Steinwachs
Publikováno v:
Frontiers in Physics, Vol 8 (2020)
For any fundamental quantum field theory, unitarity, renormalizability, and relativistic invariance are considered to be essential properties. Unitarity is inevitably connected to the probabilistic interpretation of the quantum theory, while renormal
Externí odkaz:
https://doaj.org/article/fe8d07ca24e4438282295e0ae4343a1e
Publikováno v:
Nuclear Physics B, Vol 954, Iss , Pp - (2020)
In scalaron-Higgs inflation the Standard Model Higgs boson is non-minimally coupled to gravity and the Einstein-Hilbert action is supplemented by the quadratic scalar curvature invariant. For the quartic Higgs self-coupling λ fixed at the electrowea
Externí odkaz:
https://doaj.org/article/c66f336343b44985be932115a2add178
Autor:
Andrei O. Barvinsky, Diego Blas, Mario Herrero-Valea, Sergey M. Sibiryakov, Christian F. Steinwachs
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 7, Pp 1-42 (2018)
Abstract Using the background-field method we demonstrate the Becchi-Rouet-Stora-Tyutin (BRST) structure of counterterms in a broad class of gauge theories. Put simply, we show that gauge invariance is preserved by renormalization in local gauge fiel
Externí odkaz:
https://doaj.org/article/bb0a8e8e87974cb692dbf2f914f3cba6
Autor:
Andrei O. Barvinsky, Diego Blas, Mario Herrero-Valea, Dmitry V. Nesterov, Guillem Pérez-Nadal, Christian F. Steinwachs
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 6, Pp 1-35 (2017)
Abstract We study the one-loop covariant effective action of Lifshitz theories using the heat kernel technique. The characteristic feature of Lifshitz theories is an anisotropic scaling between space and time. This is enforced by the existence of a p
Externí odkaz:
https://doaj.org/article/d00f48987681451f8fc0248e08371f76
Publikováno v:
Physical Review
Phys. Rev. D
Phys. Rev. D
We investigate the production of primordial black holes and their contribution to the presently observed dark matter in a dilaton two-field extension of Starobinsky's quadratic $f(R)$ model of inflation. The model features a multi-field amplification
Autor:
Christian F. Steinwachs
We investigate the non-perturbative renormalization group flow of the scalar Galileon model in flat space. We discuss different expansion schemes of the Galileon truncation, including a heat-kernel based derivative expansion, a vertex expansion in mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de90018fa8bb5f76b6e3af5d6746382a
http://arxiv.org/abs/2101.07271
http://arxiv.org/abs/2101.07271
Publikováno v:
Physical Review D. 101
We find new static, spherically symmetric, and asymptotically flat vacuum solutions without horizon in Starobinsky's quadratic f(R) gravity. We systematically classify these solutions by an asymptotic analysis around the origin and find seven differe
Autor:
Christian F. Steinwachs
Publikováno v:
Fundamental Theories of Physics ISBN: 9783030511968
The accelerated expansion of the early universe is an integral part of modern cosmology and dynamically realized by the mechanism of inflation. The simplest theoretical description of the inflationary paradigm is based on the assumption of an additio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3639dfd263159d6dc72269de378f468a
https://doi.org/10.1007/978-3-030-51197-5_11
https://doi.org/10.1007/978-3-030-51197-5_11
We derive the first quantum gravitational corrections to the inflationary power spectra for a general single-field scalar-tensor theory which includes a non-minimal coupling to gravity, a non-standard scalar kinetic term and an arbitrary potential of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::757b67a2d7dd0ca2b35aa8a072f29a76