Zobrazeno 1 - 10
of 469
pro vyhledávání: '"D'angelo Francesco"'
The strong sphaleron rate, i.e., the rate of real time QCD topological transitions, is a key phenomenological quantity, playing a fundamental role in several physical contexts. In heavy-ion collisions, a non-vanishing rate can lead to the so-called C
Externí odkaz:
http://arxiv.org/abs/2405.05857
Autor:
Athenodorou Andreas, Bonanno Claudio, Bonati Claudio, Clemente Giuseppe, D’Angelo Francesco, D’Elia Massimo, Maio Lorenzo, Martinelli Guido, Sanfilippo Francesco, Todaro Antonino
Publikováno v:
EPJ Web of Conferences, Vol 274, p 06001 (2022)
We compute the topological susceptibility of high temperature QCD with 2+1 physical mass quarks using the multicanonical approach and the spectral projector estimate of the topological charge. This approach presents reduced lattice artifacts with res
Externí odkaz:
https://doaj.org/article/99fff134966c4d3a9a89d2d687dac123
We compute the sphaleron rate on the lattice. We adopt a novel strategy based on the extraction of the spectral density via a modified version of the Backus-Gilbert method from finite-lattice-spacing and finite-smoothing-radius Euclidean topological
Externí odkaz:
http://arxiv.org/abs/2312.15468
Weight decay is a broadly used technique for training state-of-the-art deep networks, including large language models. Despite its widespread usage, its role remains poorly understood. In this work, we highlight that the role of weight decay in moder
Externí odkaz:
http://arxiv.org/abs/2310.04415
We compute the sphaleron rate on the lattice from the inversion of the Euclidean time correlators of the topological charge density, performing also controlled continuum and zero-smoothing extrapolations. The correlator inversion is performed by mean
Externí odkaz:
http://arxiv.org/abs/2309.13327
We compute the chiral condensate of $2+1$ QCD from the mode number of the staggered Dirac operator, performing controlled extrapolations to both the continuum and the chiral limit. We consider also alternative strategies, based on the quark mass depe
Externí odkaz:
http://arxiv.org/abs/2308.01303
We compute the sphaleron rate of $N_f=2+1$ QCD at the physical point for a range of temperatures $200$ MeV $\lesssim T \lesssim 600$ MeV. We adopt a strategy recently applied in the quenched case, based on the extraction of the rate via a modified ve
Externí odkaz:
http://arxiv.org/abs/2308.01287
We compute the sphaleron rate in quenched QCD for a temperature $T \simeq 1.24~T_c$ from the inversion of the Euclidean lattice time correlator of the topological charge density. We explore and compare two different strategies: one follows a new appr
Externí odkaz:
http://arxiv.org/abs/2305.17120
Autor:
Athenodorou, Andreas, Bonanno, Claudio, Bonati, Claudio, Clemente, Giuseppe, D'Angelo, Francesco, D'Elia, Massimo, Maio, Lorenzo, Martinelli, Guido, Sanfilippo, Francesco, Todaro, Antonino
The QCD topological observables are essential inputs to obtain theoretical predictions about axion phenomenology, which are of utmost importance for current and future experimental searches for this particle. Among them, we focus on the topological s
Externí odkaz:
http://arxiv.org/abs/2211.01673
Autor:
Athenodorou, Andreas, Bonanno, Claudio, Bonati, Claudio, Clemente, Giuseppe, D'Angelo, Francesco, D'Elia, Massimo, Maio, Lorenzo, Martinelli, Guido, Sanfilippo, Francesco, Todaro, Antonino
We compute the topological susceptibility of $N_f=2+1$ QCD with physical quark masses in the high-temperature phase, using numerical simulations of the theory discretized on a space-time lattice. More precisely we estimate the topological susceptibil
Externí odkaz:
http://arxiv.org/abs/2208.08921