112 citations · 1.1k across the 53 of their papers we have counts for
52 papers · 1 filter
The structure of the pion at large
Isaac Zhu, Fernando Romero-López, Phiala E. Shanahan
We compute the pion quark momentum fraction in the large- limit using the Twisted Eguchi-Kawai (TEK) reduced model. Gauge configurations for different values of the lattice sp…
Quark-mass dependence of two-nucleon scattering
Jorge Baeza-Ballesteros, André Baião-Raposo, Davide Laudicina +13
Understanding how the properties of the visible Universe depend on the parameters of the Standard Model of particle physics requires \emph{ab initio} theoretical computations. To t…
Improving hadron creation operators for charmonium, glueballs and baryons
Juan Andrés Urrea-Niño, John Bulava, Nikolai Husung +5
Constructing hadron creation operators which properly sample the finite-volume energy spectrum is a fundamental step in lattice QCD spectroscopy and scattering calculations. Operat…
Accessing the Wess-Zumino-Witten term using Lattice QCD
Fernando Romero-López, Stephen R. Sharpe
The Wess-Zumino-Witten interaction in chiral perturbation theory is a manifestation of chiral anomalies. One of its consequences is the presence of a nonvanishing $K \overline K \t…
Learning the generating functional for variance reduction in lattice QCD
Ryan Abbott, Yang Fu, Daniel C. Hackett +3
The generating functional in quantum field theory provides the natural framework for constructing correlation functions as derivatives with respect to source operators. We present…
as a precision test of a new four flavor Domain Wall Fermion action
Renwick J. Hudspith, Nicolas Garron, Zack Hall +12
We present a new set of lattice QCD ensembles with four flavors of smeared Möbius Domain Wall Fermions with good chiral symmetry and small fifth-dimensional extent. A modest amount…
Investigating the role of tetraquark operators in lattice QCD studies of the and resonances
Andrew D. Hanlon, Daniel Darvish, Sarah Skinner +7
The role of tetraquark operators in studying the isodoublet strange and isovector nonstrange scalar mesons in lattice QCD is examined using an ensemble with $m_π\app…
Variance reduction in lattice QCD observables via normalizing flows
Ryan Abbott, Denis Boyda, Yang Fu +5
Normalizing flows can be used to construct unbiased, reduced-variance estimators for lattice field theory observables that are defined by a derivative with respect to action parame…
QCD constraints on isospin-dense matter and the nuclear equation of state
Ryan Abbott, William Detmold, Marc Illa +5
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 neutr…
Practical applications of machine-learned flows on gauge fields
Ryan Abbott, Michael S. Albergo, Denis Boyda +5
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 increasin…
Multiscale Normalizing Flows for Gauge Theories
Ryan Abbott, Michael S. Albergo, Denis Boyda +5
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…
Electroweak three-body decays in the presence of two- and three-body bound states
Raul A. Briceño, Andrew Jackura, Dimitra A. Pefkou +1
Recently, formalism has been derived for studying electroweak transition amplitudes for three-body systems both in infinite and finite volumes. The formalism provides exact relatio…
Progress in meson-meson scattering at large
Jorge Baeza-Ballesteros, Pilar Hernández, Fernando Romero-López
We study the large scaling of meson-meson scattering amplitudes in a theory with degenerate quark flavors. We focus on two different scattering channels…
Applications of flow models to the generation of correlated lattice QCD ensembles
Ryan Abbott, Aleksandar Botev, Denis Boyda +7
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 act…
Incorporating effects and left-hand cuts in lattice QCD studies of the
Maxwell T. Hansen, Fernando Romero-López, Stephen R. Sharpe
We generalize the relativistic field-theoretic three-particle finite-volume scattering formalism to describe generic systems in the charm sector. This includes the isos…
2-flavour gauge theory with exponential clover Wilson fermions
Laurence Sebastian Bowes, Vincent Drach, Patrick Fritzsch +2
Composite Higgs models are a class of models proposed to address the hierarchy and naturalness problems associated with the Standard Model fundamental scalar Higgs. with tw…
The from Lattice QCD: Determining the Finite-volume Spectra
John Bulava, Bárbara Cid-Mora, Andrew D. Hanlon +8
This work presents technical details of determining the finite-volume energy spectra for the scattering amplitude of the coupled-channel from lattice QCD data. The i…
Lattice QCD studies of the baryon resonance and the and meson resonances: the role of exotic operators in determining the finite-volume spectrum
John Bulava, Danny Darvish, Andrew D. Hanlon +7
Studies of the baryon resonance and the and meson resonances using lattice QCD for pion masses near 200 MeV are presented. The -wave sca…
Low-lying baryon resonances from lattice QCD
John Bulava, Barbara Cid-Mora, Andrew D. Hanlon +8
Recent results studying the masses and widths of low-lying baryon resonances in lattice QCD are presented. The -wave scattering lengths for both total isospins an…
Lattice quantum chromodynamics at large isospin density: 6144 pions in a box
Ryan Abbott, William Detmold, Fernando Romero-López +6
We present an algorithm to compute correlation functions for systems with the quantum numbers of many identical mesons from lattice quantum chromodynamics (QCD). The algorithm is n…
Lattice QCD study of scattering and the resonance
John Bulava, Bárbara Cid-Mora, Andrew D. Hanlon +8
A lattice QCD computation of the coupled channel scattering amplitudes in the region is detailed. Results are obtained using a single ensemble of gauge fiel…
Two-pole nature of the from lattice QCD
John Bulava, Bárbara Cid-Mora, Andrew D. Hanlon +8
This letter presents the first lattice QCD computation of the coupled channel scattering amplitudes at energies near . These amplitudes contain the r…
Normalizing flows for lattice gauge theory in arbitrary space-time dimension
Ryan Abbott, Michael S. Albergo, Aleksandar Botev +11
Applications of normalizing flows to the sampling of field configurations in lattice gauge theory have so far been explored almost exclusively in two space-time dimensions. We repo…
Three relativistic neutrons in a finite volume
Zachary T. Draper, Maxwell T. Hansen, Fernando Romero-López +1
We generalize the relativistic field-theoretic (RFT) three-particle finite-volume formalism to systems of three identical, massive, spin- fermions, such as three neutrons. Thi…