Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Bastianelli, Fiorenzo"'
Publikováno v:
JHEP 10 (2023) 152
In this work, we investigate the computation of the counterterms necessary for the renormalization of the one-loop effective action of quantum gravity using both the worldline formalism and the heat kernel method. Our primary contribution is the dete
Externí odkaz:
http://arxiv.org/abs/2307.09353
We present an extension to arbitrary dimensions of a worldline path integral approach to one-loop quantum gravity, which was previously formulated in four spacetime dimensions. By utilizing this method, we recalculate gauge invariant coefficients rel
Externí odkaz:
http://arxiv.org/abs/2305.06650
Heat kernel methods are useful for studying properties of quantum gravity. We recompute here the first three heat kernel coefficients in perturbative quantum gravity with cosmological constant to ascertain which ones are correctly reported in the lit
Externí odkaz:
http://arxiv.org/abs/2206.13287
Autor:
Bastianelli, Fiorenzo, Chiese, Luca
We investigate the trace anomaly of a chiral fermion in dimensional regularization, considering in detail the simplest case of coupling to an abelian gauge field. We apply the Breitenlohner-Maison/'t Hooft-Veltman prescription for dealing with the ch
Externí odkaz:
http://arxiv.org/abs/2203.11668
Autor:
Ahmadiniaz, Naser, Guzman, Victor Miguel Banda, Schubert, Christian, Bastianelli, Fiorenzo, Corradini, Olindo, Edwards, James P.
We describe progress applying the \textit{Worldline Formalism} of quantum field theory to the fermion propagator dressed by $N$-photons to study multi-linear Compton scattering processes, explaining how this approach -- whose calculational advantages
Externí odkaz:
http://arxiv.org/abs/2201.10852
Using the worldline quantum field theory (WQFT) formalism for classical scattering, we study the deflection of light by a heavy massive spinless/spinning object. WQFT requires the use of the worldline dressed propagator of a photon in a gravitational
Externí odkaz:
http://arxiv.org/abs/2112.05013
Photon-graviton conversion in a magnetic field is a process that is usually studied at tree level, but the one-loop corrections due to scalars and spinors have also been calculated. Differently from the tree-level process, at one-loop one finds the a
Externí odkaz:
http://arxiv.org/abs/2111.01980
Bi-adjoint scalars are helpful in studying properties of color/kinematics duality and the double copy, which relates scattering amplitudes of gauge and gravity theories. Here we study bi-adjoint scalars from a worldline perspective. We show how a glo
Externí odkaz:
http://arxiv.org/abs/2107.10130