Search Results for author: Fernando Romero-López

Found 6 papers, 1 papers with code

Aspects of scaling and scalability for flow-based sampling of lattice QCD

no code implementations14 Nov 2022 Ryan Abbott, Michael S. Albergo, Aleksandar Botev, Denis Boyda, Kyle Cranmer, Daniel C. Hackett, Alexander G. D. G. Matthews, Sébastien Racanière, Ali Razavi, Danilo J. Rezende, Fernando Romero-López, Phiala E. Shanahan, Julian M. Urban

Recent applications of machine-learned normalizing flows to sampling in lattice field theory suggest that such methods may be able to mitigate critical slowing down and topological freezing.

Gauge-equivariant flow models for sampling in lattice field theories with pseudofermions

no code implementations18 Jul 2022 Ryan Abbott, Michael S. Albergo, Denis Boyda, Kyle Cranmer, Daniel C. Hackett, Gurtej Kanwar, Sébastien Racanière, Danilo J. Rezende, Fernando Romero-López, Phiala E. Shanahan, Betsy Tian, Julian M. Urban

This work presents gauge-equivariant architectures for flow-based sampling in fermionic lattice field theories using pseudofermions as stochastic estimators for the fermionic determinant.

Flow-based sampling in the lattice Schwinger model at criticality

no code implementations23 Feb 2022 Michael S. Albergo, Denis Boyda, Kyle Cranmer, Daniel C. Hackett, Gurtej Kanwar, Sébastien Racanière, Danilo J. Rezende, Fernando Romero-López, Phiala E. Shanahan, Julian M. Urban

In this work, we provide a numerical demonstration of robust flow-based sampling in the Schwinger model at the critical value of the fermion mass.

Decay amplitudes to three hadrons from finite-volume matrix elements

no code implementations25 Jan 2021 Maxwell T. Hansen, Fernando Romero-López, Stephen R. Sharpe

We derive relations between finite-volume matrix elements and infinite-volume decay amplitudes, for processes with three spinless, degenerate and either identical or non-identical particles in the final state.

High Energy Physics - Lattice High Energy Physics - Phenomenology

The Large $N_c$ limit of QCD on the lattice

no code implementations6 Dec 2020 Pilar Hernández, Fernando Romero-López

We review recent progress in the study of the large $N_c$ limit of gauge theories from lattice simulations.

High Energy Physics - Lattice High Energy Physics - Phenomenology

Scattering of two and three physical pions at maximal isospin from lattice QCD

1 code implementation7 Aug 2020 Matthias Fischer, Bartosz Kostrzewa, Liuming Liu, Fernando Romero-López, Martin Ueding, Carsten Urbach

In the two-particle sector, we observe good agreement to the phenomenological fits in $s$- and $d$-wave, and obtain $M_\pi a_0 = -0. 0481(86)$ at the physical point from a direct computation.

High Energy Physics - Lattice High Energy Physics - Phenomenology

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