Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Renata Ferrero"'
Autor:
Renata Ferrero, Roberto Percacci
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-29 (2024)
Abstract We consider a quantum scalar field in a classical (Euclidean) De Sitter background, whose radius is fixed dynamically by Einstein’s equations. In the case of a free scalar, it has been shown by Becker and Reuter that if one regulates the q
Externí odkaz:
https://doaj.org/article/b97a3a37cbb34ab6a78cf19ac191fca3
Autor:
Renata Ferrero, Thomas Thiemann
Publikováno v:
Universe, Vol 10, Iss 11, p 410 (2024)
In a recent contribution, we identified possible points of contact between the asymptotically safe and canonical approaches to quantum gravity. The idea is to start from the reduced phase space (often called relational) formulation of canonical quant
Externí odkaz:
https://doaj.org/article/42d0a40f79274283a15517cd969ee2bb
Autor:
Renata Ferrero, Chris Ripken
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 8, Pp 1-38 (2023)
Abstract We employ a manifestly covariant formalism to compute the tree-level amputated Green’s function of non-minimally coupled scalar fields in quadratic gravity in a de Sitter background. We study this Green’s function in the adiabatic limit,
Externí odkaz:
https://doaj.org/article/a10926482bb541218c2ae59654f96c54
Autor:
Renata Ferrero, Martin Reuter
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-40 (2022)
Abstract Quantum Einstein Gravity (QEG), nonperturbatively renormalized by means of a certain asymptotically safe renormalization group (RG) trajectory, is explored by solving its scale dependent effective field equations and embedding the family of
Externí odkaz:
https://doaj.org/article/0bd028a72c4d4be597e82f4c1da1364d
Autor:
Renata Ferrero, Martin Reuter
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-70 (2022)
Abstract Within the functional renormalization group approach to Background Independent quantum gravity, we explore the scale dependent effective geometry of the de Sitter solution dS4. The investigation employs a novel approach whose essential ingre
Externí odkaz:
https://doaj.org/article/f287c2b932874179baea0dda6784d966
Autor:
Renata Ferrero, Chris Ripken
Publikováno v:
SciPost Physics, Vol 13, Iss 5, p 106 (2022)
We present a covariant framework to compute scattering amplitudes and potentials in a de Sitter background. In this setting, we compute the potential of a graviton-mediated scattering process involving two very massive scalars at tree level. Although
Externí odkaz:
https://doaj.org/article/3de4a8ec45894cf3a9ff5e5c7497dae0
Autor:
Renata Ferrero, Martin Reuter
Publikováno v:
Universe, Vol 7, Iss 5, p 125 (2021)
Considering the scale-dependent effective spacetimes implied by the functional renormalization group in d-dimensional quantum Einstein gravity, we discuss the representation of entire evolution histories by means of a single, (d+1)-dimensional manifo
Externí odkaz:
https://doaj.org/article/465932c3debd427e824a3a044186ec6a
Publikováno v:
Annals of Physics. 440:168822
We introduce an approach to compute the renormalisation group flow of relational observables in quantum gravity which evolve from their microscopic expressions towards the full quantum expectation value. This is achieved by using the composite operat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b13a8b715f3104841ec682a56b7c2193
https://doi.org/10.1016/j.aop.2022.168822
https://doi.org/10.1016/j.aop.2022.168822
Publikováno v:
REVISTA DA AGU; ANO 10, Nº 28, ABR./JUN. 2011
Revista da AGU
Advocacia-Geral da União (AGU)
instacron:AGU
Revista da AGU
Advocacia-Geral da União (AGU)
instacron:AGU
A análise teleológica do artigo 120 da Lei n° 8.213/91 é feita com base nos princípios ético-diretivos da Constituição da República, cujo epicentro é o princípio da dignidade humana, o qual é indissociável do direito ao meio ambiente do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0fcd533fd5a60aab82fd54e4eae9b73
https://seer.agu.gov.br/index.php/AGU/article/view/161
https://seer.agu.gov.br/index.php/AGU/article/view/161
