Zobrazeno 1 - 10
of 361
pro vyhledávání: '"Tantalo, P."'
The analytical continuation of correlation functions from imaginary to real time is a crucial step in lattice gauge theories, and it challenges our ability to derive non-perturbative predictions from lattice simulations. We review aspects of this "in
Externí odkaz:
http://arxiv.org/abs/2410.09944
The problem of obtaining spectral densities from lattice data has been receiving great attention due to its importance in our understanding of scattering processes in Quantum Field Theory, with applications both in the Standard Model and beyond. The
Externí odkaz:
http://arxiv.org/abs/2409.04413
Autor:
Patella, Agostino, Tantalo, Nazario
In this work we provide a non-perturbative solution to the theoretical problem of extracting scattering amplitudes from Euclidean correlators in infinite volume. We work within the solid axiomatic framework of the Haag-Ruelle scattering theory and de
Externí odkaz:
http://arxiv.org/abs/2407.02069
Autor:
D'Orazi, Valentina, Storm, Nicholas, Casey, Andrew R., Braga, Vittorio F., Zocchi, Alice, Bono, Giuseppe, Fabrizio, Michele, Sneden, Christopher, Massari, Davide, Giribaldi, Riano E., Bergemann, Maria, Campbell, Simon W., Casagrande, Luca, de Grijs, Richard, De Silva, Gayandhi, Lugaro, Maria, Zucker, Daniel B., Bragaglia, Angela, Feuillet, Diane, Fiorentino, Giuliana, Chaboyer, Brian, Dall'Ora, Massimo, Marengo, Massimo, Martínez-Vázquez, Clara E., Matsunaga, Noriyuki, Monelli, Matteo, Mullen, Joseph P., Nataf, David, Tantalo, Maria, Thevenin, Frederic, Vitello, Fabio R., Kudritzki, Rolf-Peter, Bland-Hawthorn, Joss, Buder, Sven, Freeman, Ken, Kos, Janez, Lewis, Geraint F., Lind, Karin, Martell, Sarah, Sharma, Sanjib, Stello, Dennis, Zwitter, Tomaž
Stellar mergers and accretion events have been crucial in shaping the evolution of the Milky Way (MW). These events have been dynamically identified and chemically characterised using red giants and main-sequence stars. RR Lyrae (RRL) variables can p
Externí odkaz:
http://arxiv.org/abs/2405.04580
Autor:
Alexandrou, C., Bacchio, S., De Santis, A., Evangelista, A., Finkenrath, J., Frezzotti, R., Gagliardi, G., Garofalo, M., Kostrzewa, B., Lubicz, V., Romiti, S., Sanfilippo, F., Simula, S., Tantalo, N., Urbach, C., Wenger, U.
We present a lattice determination of the inclusive decay rate of the process $\tau\mapsto X_{us} \nu_\tau$ in which the $\tau$ lepton decays into a generic hadronic state $X_{us}$ with $\bar u s$ flavour quantum numbers. Our results have been obtain
Externí odkaz:
http://arxiv.org/abs/2403.05404
Autor:
Frezzotti, R., Gagliardi, G., Lubicz, V., Martinelli, G., Sachrajda, C. T., Sanfilippo, F., Simula, S., Tantalo, N.
We determine, by means of lattice QCD calculations, the local form factors describing the $B_{s}\to \mu^{+}\mu^{-}\gamma$ decay. For this analysis we make use of the gauge configurations produced by the ETM Collaboration with $N_{f}=2+1+1$ flavour of
Externí odkaz:
http://arxiv.org/abs/2402.03262
In this talk we discuss a novel method, that we have presented in Ref. [1], to extract hadronic spectral densities from lattice correlators by using deep learning techniques. Hadronic spectral densities play a crucial role in the study of the phenome
Externí odkaz:
http://arxiv.org/abs/2401.05344
Autor:
Gambino, Paolo, Hashimoto, Shoji, Mächler, Sandro, Panero, Marco, Sanfilippo, Francesco, Simula, Silvano, Smecca, Antonio, Tantalo, Nazario
In this contribution we describe a recent study focused on the lattice calculation of inclusive decay rates of heavy mesons. We show how the inclusive calculation can be achieved starting from four-point lattice correlation functions normalised appro
Externí odkaz:
http://arxiv.org/abs/2311.09892
Autor:
Evangelista, Antonio, Frezzotti, Roberto, Gagliardi, Giuseppe, Lubicz, Vittorio, Sanfilippo, Francesco, Simula, Silvano, Tantalo, Nazario
Inclusive hadronic decays of the $\tau$ lepton are very interesting from the phenomenological point of view since they give access to the CKM matrix elements $V_{ud}$ and $V_{us}$. In this paper, for the first time, by employing the HLT method for ha
Externí odkaz:
http://arxiv.org/abs/2308.03125
We present a new supervised deep-learning approach to the problem of the extraction of smeared spectral densities from Euclidean lattice correlators. A distinctive feature of our method is a model-independent training strategy that we implement by pa
Externí odkaz:
http://arxiv.org/abs/2307.00808