Zobrazeno 1 - 10
of 778
pro vyhledávání: '"Romero Lopez A"'
Autor:
Abbott, Ryan, Hackett, Daniel C., Pefkou, Dimitra A., Romero-López, Fernando, Shanahan, Phiala
This work presents preliminary results of the first determination of the energy-momentum tensor form factors of the scalar glueball, referred to as gravitational form factors (GFFs). The calculation has been carried out in lattice Yang-Mills theory a
Externí odkaz:
http://arxiv.org/abs/2410.02706
We develop a comprehensive framework for extracting the pole position and properties of the doubly-charmed tetraquark $T_{\rm cc}^+(3875)$ from lattice QCD data using the relativistic three-particle formalism. This approach incorporates the effect of
Externí odkaz:
http://arxiv.org/abs/2409.17059
Autor:
Abbott, Ryan, Detmold, William, Illa, Marc, Parreño, Assumpta, Perry, Robert J., Romero-López, Fernando, Shanahan, Phiala E., Wagman, Michael L.
Understanding the behavior of dense hadronic matter is a central goal in nuclear physics as it governs the nature and dynamics of astrophysical objects such as supernovae and neutron stars. Because of the non-perturbative nature of quantum chromodyna
Externí odkaz:
http://arxiv.org/abs/2406.09273
Autor:
Abbott, Ryan, Albergo, Michael S., Boyda, Denis, Hackett, Daniel C., Kanwar, Gurtej, Romero-López, Fernando, Shanahan, Phiala E., Urban, Julian M.
Normalizing flows are machine-learned maps between different lattice theories which can be used as components in exact sampling and inference schemes. Ongoing work yields increasingly expressive flows on gauge fields, but it remains an open question
Externí odkaz:
http://arxiv.org/abs/2404.11674
Autor:
Abbott, Ryan, Albergo, Michael S., Boyda, Denis, Hackett, Daniel C., Kanwar, Gurtej, Romero-López, Fernando, Shanahan, Phiala E., Urban, Julian M.
Scale separation is an important physical principle that has previously enabled algorithmic advances such as multigrid solvers. Previous work on normalizing flows has been able to utilize scale separation in the context of scalar field theories, but
Externí odkaz:
http://arxiv.org/abs/2404.10819
Recently, formalism has been derived for studying electroweak transition amplitudes for three-body systems both in infinite and finite volumes. The formalism provides exact relations that the infinite-volume amplitudes must satisfy, as well as a rela
Externí odkaz:
http://arxiv.org/abs/2402.12167
Autor:
Baeza-Ballesteros, Jorge, Bijnens, Johan, Husek, Tomáš, Romero-López, Fernando, Sharpe, Stephen R., Sjö, Mattias
Publikováno v:
JHEP 03 (2024) 048
The three-particle $K$-matrix, $\mathcal{K}_{\mathrm{df},3}$, is a scheme-dependent quantity that parametrizes short-range three-particle interactions in the relativistic-field-theory three-particle finite-volume formalism. In this work, we compute i
Externí odkaz:
http://arxiv.org/abs/2401.14293
Autor:
Abbott, Ryan, Botev, Aleksandar, Boyda, Denis, Hackett, Daniel C., Kanwar, Gurtej, Racanière, Sébastien, Rezende, Danilo J., Romero-López, Fernando, Shanahan, Phiala E., Urban, Julian M.
Machine-learned normalizing flows can be used in the context of lattice quantum field theory to generate statistically correlated ensembles of lattice gauge fields at different action parameters. This work demonstrates how these correlations can be e
Externí odkaz:
http://arxiv.org/abs/2401.10874
We generalize the relativistic field-theoretic three-particle finite-volume scattering formalism to describe generic $DD\pi$ systems in the charm $C=2$ sector. This includes the isospin-0 channel, in which the recently discovered doubly-charmed tetra
Externí odkaz:
http://arxiv.org/abs/2401.06609
We study the large $N_\text{c}$ scaling of meson-meson scattering amplitudes in a theory with $N_\text{f}=4$ degenerate quark flavors. We focus on two different scattering channels, one having the same quantum numbers as some recently found tetraquar
Externí odkaz:
http://arxiv.org/abs/2401.05177