Informations fournies par OpenAlex. Research Africa ne déduit ni nationalité, ni poste, ni coordonnées personnelles.
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Riccardo Gandolfo et autres
According to usual calculations, both in flat and curved spacetime, the mass m 2 of a scalar particle is quadratically sensitive to the ultimate scale of the theory, the UV physical cutoff Λ. Building on previous work [1–3], here we calculate the …
us (code pays fourni par la source)
Vincenzo Branchina, F. Contino, Riccardo Gandolfo, Arcangelo Pernace
According to usual calculations, the use of a hard cutoff Λ in gauge theories leads to a violation of gauge invariance. This seems to generate a tension between gauge theories and the Wilsonian effective field theory paradigm, where Λ has the physical …
it (code pays fourni par la source)
Vincenzo Branchina, Salvatore Capozziello, Filippo Contino, Carmen Ferrara
The decay of a metastable (false) vacuum plays a crucial role in constraining Standard Model and beyond the Standard Model physics. In particular, it has been shown that gravity can have a significant impact on the calculation of the decay rate. In …
Vincenzo Branchina, Salvatore Capozziello, Filippo Contino, Carmen Ferrara
The decay of a metastable (false) vacuum plays a crucial role in constraining Standard Model and beyond the Standard Model physics. In particular, it has been shown that gravity can have a significant impact on the calculation of the decay rate. In …
it (code pays fourni par la source)
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Riccardo Gandolfo et autres
We have recently shown that a natural way to implement the Wilsonian paradigm in gauge theories is through the introduction of a ``spectral cutoff", a cut on the eigenvalues of the covariant Laplacian, pointing out that this provides the route toward the …
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Riccardo Gandolfo et autres
We have recently shown that a natural way to implement the Wilsonian paradigm in gauge theories is through the introduction of a ``spectral cutoff", a cut on the eigenvalues of the covariant Laplacian, pointing out that this provides the route toward the …
it (code pays fourni par la source)
Vincenzo Branchina, Filippo Contino, Riccardo Gandolfo, Arcangelo Pernace
We investigate on the diffeomorphism invariance of the effective gravitational action, focusing in particular on the path integral measure. In the literature, two different measures are mainly considered, the Fradkin-Vilkovisky and the Fujikawa one. With the help of detailed calculations, we show …
it (code pays fourni par la source)
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Riccardo Gandolfo et autres
We investigate on the diffeomorphism invariance of the effective gravitational action, focusing in particular on the path integral measure. In the literature, two different measures are mainly considered, the Fradkin-Vilkovisky and the Fujikawa one. With the help of detailed calculations, we show …
Vincenzo Branchina, Filippo Contino, Arcangelo Pernace
Considering the Einstein-Hilbert truncation for the running action in (Euclidean) quantum gravity, we derive the renormalization group equations for the cosmological and Newton constant. We find that these equations admit only the Gaussian fixed point with a UV-attractive and a UV-repulsive eigendirection, …
it (code pays fourni par la source)
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Arcangelo Pernace
Considering (Euclidean) quantum gravity in the Einstein-Hilbert truncation, we calculate the one-loop effective action Γ grav 1 l using a spherical background. Usually, this calculation is performed resorting to proper-time regularization within the heat kernel expansion and gives rise to quartically and …
it (code pays fourni par la source)
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Riccardo Gandolfo et autres
In this note we comment on the RG flow of the Newton and cosmological constants, also in view of some recent claims [1] that would rise some doubts on the validity of our recent work [2,3]. Here we show that the arguments …
Carlo Branchina, Vincenzo Branchina, Filippo Contino, Arcangelo Pernace
Considering the Einstein-Hilbert truncation for the running action in (euclidean) quantum gravity, we derive the renormalization group equations for the cosmological and Newton constant. We find that these equations admit only the Gaussian fixed point with a UV-attractive and a UV-repulsive eigendirection, …
BNTIC News n’est pas le producteur de ces données. Les publications sont interrogées à la demande dans Crossref, OpenAIRE, DOAJ, Europe PMC, HAL, DataCite, AfricArXiv, ROR et la Banque mondiale, sans clé d’accès. OpenAlex reste optionnel. Aucun service payant n’est nécessaire et aucune donnée externe n’est enregistrée en base. Consulter les sources et leurs limites.
L'essentiel de l'actu tech du Burkina & d'Afrique, chaque semaine dans votre boîte mail.
Gratuit · sans spam · désinscription en un clic