Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Tantalo Nazario"'
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
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
Autor:
Altherr, Anian, Bushnaq, Lucius, Campos, Isabel, Catillo, Marco, Cotellucci, Alessandro, Dale, Madeleine, Fritzsch, Patrick, Gruber, Roman, Komijani, Javad, Lücke, Jens, Marinković, Marina Krstić, Martins, Sofie, Patella, Agostino, Tantalo, Nazario, Tavella, Paola
We present preliminary results for the determination of the leading strange and charm quark-connected contributions to the hadronic vacuum polarization contribution to the muon's g-2. Measurements are performed on the RC* collaboration's QCD ensemble
Externí odkaz:
http://arxiv.org/abs/2301.04385
Autor:
Tantalo, Nazario
The first step of any QFT calculation, aiming at phenomenological predictions, is the matching of the theory to Nature. The matching procedure fixes the parameters of the theory in terms of an equal number of external inputs that, if the theory is ex
Externí odkaz:
http://arxiv.org/abs/2301.02097
Autor:
Evangelista, Antonio, Frezzotti, Roberto, Gagliardi, Giuseppe, Lubicz, Vittorio, Sanfilippo, Francesco, Simula, Silvano, Tantalo, Nazario
The inclusive hadronic decay-rates of the $\tau$ lepton are particularly interesting from the phenomenological point of view since they give access to the CKM matrix elements $V_{ud}$ and $V_{us}$. In this talk, we discuss how a recent method for the
Externí odkaz:
http://arxiv.org/abs/2301.00796