Zobrazeno 1 - 10
of 381
pro vyhledávání: '"Raciti, M."'
Autor:
Brienza, M., Gilli, R., Prandoni, I., D'Amato, Q., Rajpurohit, K., Calura, F., Chiaberge, M., Comastri, A., Iwasawa, K., Lanzuisi, G., Liuzzo, E., Marchesi, S., Mignoli, M., Miley, G., Norman, C., Peca, A., Raciti, M., Shimwell, T., Tozzi, P., Vignali, C., Vitello, F., Vito, F.
In the nearby universe jets from AGN are observed to have a dramatic impact on their surrounding extragalactic environment. Their effect at the `cosmic noon' (z>1.5), the epoch when star formation and AGN activity peak, is instead much less constrain
Externí odkaz:
http://arxiv.org/abs/2302.11977
Autor:
Riggi, S., Bordiu, C., Vitello, F., Tudisco, G., Sciacca, E., Magro, D., Sortino, R., Pino, C., Molinaro, M., Benedettini, M., Leurini, S., Bufano, F., Raciti, M., Becciani, U.
Innovative developments in data processing, archiving, analysis, and visualization are nowadays unavoidable to deal with the data deluge expected in next-generation facilities for radio astronomy, such as the Square Kilometre Array (SKA) and its prec
Externí odkaz:
http://arxiv.org/abs/2110.08211
Autor:
Cesare, V., Becciani, U., Vecchiato, A., Lattanzi, M.G., Pitari, F., Raciti, M., Tudisco, G., Aldinucci, M., Bucciarelli, B.
Publikováno v:
In Astronomy and Computing October 2022 41
Publikováno v:
Prog.Part.Nucl.Phys.58:387-438,2007
We try to review the main current ideas and points of view on the running coupling constant in QCD. We begin by recalling briefly the classic analysis based on the Renormalization Group with some emphasis on the exact solutions of the RG equation for
Externí odkaz:
http://arxiv.org/abs/hep-ph/0607209
Autor:
Pernici, M., Raciti, M.
Publikováno v:
Phys.Lett. B513 (2001) 421-428
We renormalize at two loops the axial current and $F \tilde{F}$ in massless QED, using the recently proposed semi-naive dimensional renormalization scheme. We show that the results are in agreement with those in the Breitenlohner-Maison-'t Hooft-Velt
Externí odkaz:
http://arxiv.org/abs/hep-th/0003062
Publikováno v:
Nucl.Phys. B577 (2000) 293-324
In the 't Hooft-Veltman dimensional regularization scheme it is necessary to introduce finite counterterms to satisfy chiral Ward identities. It is a non-trivial task to evaluate these counterterms even at two loops. We suggest the use of Wilsonian e
Externí odkaz:
http://arxiv.org/abs/hep-th/9912248
Publikováno v:
Phys.Lett. B440 (1998) 305-312
We show that in a Wilsonian renormalization scheme with zero-momentum subtraction point the massless Wess-Zumino model satisfies the non-renormalization theorem; the finite renormalization of the superpotential appearing in the usual non-zero momentu
Externí odkaz:
http://arxiv.org/abs/hep-th/9805092
Autor:
Pernici, M., Raciti, M.
Publikováno v:
Nucl.Phys. B531 (1998) 560-592
We derive the Gell-Mann and Low renormalization group equation in the Wilsonian approach to renormalization of massless $g\phi^4$ in four dimensions, as a particular case of a non-linear equation satisfied at any scale by the Wilsonian effective acti
Externí odkaz:
http://arxiv.org/abs/hep-th/9803212
Publikováno v:
Nucl.Phys. B520 (1998) 469-492
The Wilsonian exact renormalization group gives a natural framework in which ultraviolet and infrared divergences can be treated separately. In massless QED we introduce, as the only mass parameter, a renormalization scale $\L_R > 0$. We prove, using
Externí odkaz:
http://arxiv.org/abs/hep-th/9710145
Publikováno v:
Nucl.Phys. B458 (1996) 355-386
We give a new proof of the renormalizability of a class of matter field theories on a space-time lattice; in particular we consider $\phi^4$ and massive Yukawa theories with Wilson fermions. We use the Polchinski approach to renormalization, which is
Externí odkaz:
http://arxiv.org/abs/hep-th/9507055