28 citations · 157 across the 18 of their papers we have counts for
18 papers
Quantum gravity and spectral running cutoff
Carlo Branchina, Vincenzo Branchina, Filippo Contino +2
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…
Vacuum stability in Geometric Trinity of Gravity
Vincenzo Branchina, Salvatore Capozziello, Filippo Contino +1
We investigate whether the classical equivalence of general relativity, its teleparallel equivalent, and its symmetric teleparallel equivalent extends to false-vacuum decay at lead…
Hard cutoff and gauge theories
V. Branchina, F. Contino, R. Gandolfo +1
According to usual calculations, the use of a hard cutoff in gauge theories leads to a violation of gauge invariance. This seems to generate a tension between gauge theories an…
Gravity and the Higgs boson mass
Carlo Branchina, Vincenzo Branchina, Filippo Contino +2
According to usual calculations, both in flat and curved spacetime, the mass of a scalar particle is quadratically sensitive to the ultimate scale of the theory, the UV physi…
Diffeomorphism invariance of the effective gravitational action
Carlo Branchina, Vincenzo Branchina, Filippo Contino +2
We investigate on the diffeomorphism invariance of the effective gravitational action, focusing in particular on the path integral measure. In the literature, two different measure…
On the RG flow of the Newton and cosmological constant
Carlo Branchina, Vincenzo Branchina, Filippo Contino +2
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 wo…
Path integral measure and RG equations for gravity
C. Branchina, V. Branchina, F. Contino +1
Considering the Einstein-Hilbert truncation for the running action in (euclidean) quantum gravity, we derive the renormalization group equations for the cosmological and Newton con…
Path integral measure and cosmological constant
C. Branchina, V. Branchina, F. Contino +1
Considering (euclidean) quantum gravity in the Einstein-Hilbert truncation, we calculate the one-loop effective action using a spherical background. Usually, th…
Dark Dimension and the Effective Field Theory limit
Carlo Branchina, Vincenzo Branchina, Filippo Contino +1
In [1] we pointed out that in the Dark Dimension scenario [2] theoretical issues arise when the prediction for the vacuum energy , that is obtained from swampland conjectures in…
Does the Cosmological Constant really indicate the existence of a Dark Dimension?
Carlo Branchina, Vincenzo Branchina, Filippo Contino +1
According to the "dark dimension" (DD) scenario, we might live in a universe with a single compact extra dimension, whose mesoscopic size is dictated by the measured value of the c…
Naturalness and UV sensitivity in Kaluza-Klein theories
Carlo Branchina, Vincenzo Branchina, Filippo Contino
More than twenty years ago a paradigm emerged according to which a UV-insensitive Higgs mass and (more generally) a UV-insensitive Higgs effective potential are o…
Physical Tuning and Naturalness
C. Branchina, V. Branchina, F. Contino
We present a radically new proposal for the solution of the naturalness/hierarchy problem, where the fine-tuning of the Higgs mass finds its physical explanation and the well-known…
Dimensional regularization, Wilsonian RG, and the Naturalness/Hierarchy problem
Carlo Branchina, Vincenzo Branchina, Filippo Contino +1
While it is usually stated that dimensional regularization (DR) has no direct physical interpretation, consensus has recently grown on the idea that it might be endowed with specia…
Original study of the theory. Analysis of all orders in and resummations
Vincenzo Branchina, Alberto Chiavetta, Filippo Contino
In a recent work the Green's functions of the -symmetric scalar theory were calculated at the first order of the logarithmic expansion, i.e. at first…
Non-linear and weak-coupling expansion in Quantum Field Theory
Vincenzo Branchina, Alberto Chiavetta, Filippo Contino
A formal expansion for the Green's functions of an interacting quantum field theory in a parameter that somehow encodes its "distance" from the corresponding non-interacting one wa…
Direct Higgs-gravity interaction and stability of our Universe
Vincenzo Branchina, Eloisa Bentivegna, Filippo Contino +1
The Higgs effective potential becomes unstable at approximately GeV, and if only standard model interactions are considered, the lifetime of the electroweak vacuum tu…
Electroweak vacuum lifetime in two Higgs doublet models
V. Branchina, F. Contino, P. M. Ferreira
We study the stability of neutral electroweak vacua in two Higgs doublet models, and calculate the lifetime of these states when the parameters are such that they are false vacua.…
Protecting the Stability of the EW Vacuum from Planck-Scale Gravitational Effects
Vincenzo Branchina, Filippo Contino, Apostolos Pilaftsis
We investigate the stability of the Standard-Model Electroweak (EW) vacuum in the presence of Planck-scale suppressed operators of the type that involve t…