Publications (16)
Stealth dark matter spectrum using LapH and Irreps
Richard C. Brower, Christopher Culver, Kimmy K. Cushman +17
We present non-perturbative lattice calculations of the low-lying meson and baryon spectrum of the SU(4) gauge theory with fundamental fermion constituents. This theory is one inst…
from Möbius domain-wall fermions solved on gradient-flowed HISQ ensembles
Nolan Miller, Henry Monge-Camacho, Chia Cheng Chang +15
We report the results of a lattice quantum chromodynamics calculation of using Möbius domain-wall fermions computed on gradient-flowed highly-improved stagg…
Two-nucleon S-wave interactions at the flavor-symmetric point with : a first lattice QCD calculation with the stochastic Laplacian Heaviside method
Ben Hörz, Dean Howarth, Enrico Rinaldi +11
We report on the first application of the stochastic Laplacian Heaviside method for computing multi-particle interactions with lattice QCD to the two-nucleon system. Like the Lapla…
The hyperon spectrum from lattice QCD
Nolan Miller, Grant Bradley, M. A. Clark +8
Hyperon decays present a promising alternative for extracting from lattice QCD combined with experimental measurements. Currently is deter…
The sigma meson from lattice QCD with two-pion interpolating operators
Dean Howarth, Joel Giedt
In this article we describe our studies of the sigma meson, f_0(500), using two-pion correlation functions. We use lattice quantum chromodynamics in the quenched approximation with…
Nucleon Axial Form Factor from Domain Wall on HISQ
Aaron S. Meyer, Evan Berkowitz, Chris Bouchard +10
The Deep Underground Neutrino Experiment (DUNE) is an upcoming neutrino oscillation experiment that is poised to answer key questions about the nature of neutrinos. Lattice QCD has…
Maximizing the Bang Per Bit
M. A. Clark, Dean Howarth, Jiqun Tu +2
Reducing memory traffic is critical to accelerate Lattice QCD computations on modern processors, given that such computations are memory-bandwidth bound. A commonly used strategy i…
Lattice Setup for Quantum Field Theory in AdS
Richard C. Brower, Cameron V. Cogburn, A. Liam Fitzpatrick +2
Holographic Conformal Field Theories (CFTs) are usually studied in a limit where the gravity description is weakly coupled. By contrast, lattice quantum field theory can be used as…
Detailed analysis of excited state systematics in a lattice QCD calculation of
Jinchen He, David A. Brantley, Chia Cheng Chang +14
Excited state contamination remains one of the most challenging sources of systematic uncertainty to control in lattice QCD calculations of nucleon matrix elements and form factors…
Topological charge unfreezing with AMReX
Dean Howarth, Adam J Peterson
A new approach to the problem of topological freezing in gauge theories is introduced in which a physical volume preserving coarsening of the lattice induces sufficient energy vari…
Radial Lattice Quantization of 3D Field Theory
Richard C. Brower, George T. Fleming, Andrew D. Gasbarro +4
The quantum extension of classical finite elements, referred to as quantum finite elements ({\bf QFE})~\cite{Brower:2018szu,Brower:2016vsl}, is applied to the radial quantization o…
Stochastic propagators for multi-pion correlation functions in lattice QCD with GPUs
Joel Giedt, Dean Howarth
Motivated by the application of Lüscher's finite volume method to the study of the lightest scalar resonance in the isoscalar channel, in this article we describe o…
Toward a resolution of the NN controversy
Amy Nicholson, Evan Berkowitz, John Bulava +13
Lattice QCD calculations of two-nucleon interactions have been underway for about a decade, but still haven't reached the pion mass regime necessary for matching onto effective fie…
Scale setting the Möbius Domain Wall Fermion on gradient-flowed HISQ action using the omega baryon mass and the gradient-flow scales and
Nolan Miller, Logan C Carpenter, Evan Berkowitz +14
We report on a sub-percent scale determination using the omega baryon mass and gradient-flow methods. The calculations are performed on 22 ensembles of highly improved,…
Multigrid for Chiral Lattice Fermions: Domain Wall
Richard C. Brower, M. A. Clark, Dean Howarth +1
Critical slowing down for the Krylov Dirac solver presents a major obstacle to further advances in lattice field theory as it approaches the continuum solution. We propose a new mu…
Investigating volume effects for N=2 twisted clover fermions at the physical point
Constantia Alexandrou, Simone Bacchio, Martha Constantinou +5
In this work we present preliminary results on the nucleon axial and tensor charges, the quark momentum fraction and the first moment of the helicity distribution. The simulations…