Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Baratella, Pietro"'
Over the past decade and more, S-matrix-based calculational methods have experienced a resurgence, proving to be both an elegant and powerful tool for extracting physical quantities without the need for an underlying Lagrangian formulation. In this w
Externí odkaz:
http://arxiv.org/abs/2408.06729
We revisit the decay rate of the electroweak vacuum in the Standard Model with the full one-loop prefactor. We focus on the gauge degrees of freedom and derive the degeneracy factors appearing in the functional determinant using group theoretical arg
Externí odkaz:
http://arxiv.org/abs/2406.05180
Within the framework proposed by Caron-Huot and Wilhelm, we give a recipe for computing infrared anomalous dimensions purely on-shell, efficiently up to two loops in any massless theory. After introducing the general formalism and reviewing the one-l
Externí odkaz:
http://arxiv.org/abs/2207.08831
We study the renormalization group of generic effective field theories that include gravity. We follow the on-shell amplitude approach, which provides a simple and efficient method to extract anomalous dimensions avoiding complications from gauge red
Externí odkaz:
http://arxiv.org/abs/2109.06191
On-shell amplitude methods have proven to be extremely efficient for calculating anomalous dimensions. We further elaborate on these methods to show that, by the use of an angular momentum decomposition, the one-loop anomalous dimensions can be reduc
Externí odkaz:
http://arxiv.org/abs/2010.13809
On-shell amplitude methods allow to derive one-loop renormalization effects from just tree-level amplitudes, with no need of loop calculations. We derive a simple formula to obtain the anomalous dimensions of higher-dimensional operators from a produ
Externí odkaz:
http://arxiv.org/abs/2005.07129
Strongly-coupled theories at the TeV can naturally drive a long period of supercooling in the early universe. Trapped into the deconfined phase, the universe could inflate and cool down till the temperature reaches the QCD strong scale. We show how a
Externí odkaz:
http://arxiv.org/abs/1812.06996
Autor:
Baratella, Pietro1 (AUTHOR), Maggio, Sara2 (AUTHOR), Stadlbauer, Michael1,3 (AUTHOR), Theil, Tobias1 (AUTHOR) tobias.theil.tt@gmail.com
Publikováno v:
European Physical Journal C -- Particles & Fields. Aug2023, Vol. 83 Issue 8, p1-20. 20p.
Publikováno v:
Phys. Rev. D 93, 045029 (2016)
We study how the coupling with gravity of theories with non-linearly realized space-time symmetries is modified when one changes the parametrization of the coset. As an example, we focus on the so-called Galileon duality: a reparametrization which ma
Externí odkaz:
http://arxiv.org/abs/1510.01969
Autor:
Baratella, Pietro, Cirelli, Marco, Hektor, Andi, Pata, Joosep, Piibeleht, Morten, Strumia, Alessandro
We provide ingredients and recipes for computing neutrino signals of TeV-scale Dark Matter annihilations in the Sun. For each annihilation channel and DM mass we present the energy spectra of neutrinos at production, including: state-of-the-art energ
Externí odkaz:
http://arxiv.org/abs/1312.6408