William Detmold
YOU?
Author Swipe
View article: Matrix-free Neural Preconditioner for the Dirac Operator in Lattice Gauge Theory
Matrix-free Neural Preconditioner for the Dirac Operator in Lattice Gauge Theory Open
Linear systems arise in generating samples and in calculating observables in lattice quantum chromodynamics~(QCD). Solving the Hermitian positive definite systems, which are sparse but ill-conditioned, involves using iterative methods, suc…
View article: Constraints on the finite volume two-nucleon spectrum at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>m</mml:mi><mml:mi>π</mml:mi></mml:msub><mml:mo>≈</mml:mo><mml:mn>806</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>MeV</mml:mi></mml:math>
Constraints on the finite volume two-nucleon spectrum at Open
The low-energy, finite-volume spectrum of the two-nucleon system at a quark mass corresponding to a pion mass of mπ≈806 MeV is studied with lattice quantum chromodynamics (LQCD) using variational methods. The interpolating-operator sets u…
View article: Extracting the distribution amplitude of light pseudoscalar mesons using the HOPE method
Extracting the distribution amplitude of light pseudoscalar mesons using the HOPE method Open
The pseudoscalar meson light-cone distribution amplitudes (LCDAs) are essential non-perturbative inputs for a range of high-energy exclusive processes in quantum chromodynamics. In this proceedings, progress towards a determination of the …
View article: Aspects of Propagator Sparsening in Lattice QCD
Aspects of Propagator Sparsening in Lattice QCD Open
In lattice field theory, field sparsening aims to replace quantum fields, or objects constructed from them, with approximations that preserve the appropriate symmetries and maintain many aspects of the physics that the fields determine. Fo…
View article: QCD Constraints on Isospin-Dense Matter and the Nuclear Equation of State
QCD Constraints on Isospin-Dense Matter and the Nuclear Equation of State Open
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 nonperturbative nature of quantum …
View article: Exploring gauge-fixing conditions with gradient-based optimization
Exploring gauge-fixing conditions with gradient-based optimization Open
Lattice gauge fixing is required to compute gauge-variant quantities, for example those used in RI-MOM renormalization schemes or as objects of comparison for model calculations. Recently, gauge-variant quantities have also been found to b…
View article: Position-space renormalization schemes for four-quark operators in HQET
Position-space renormalization schemes for four-quark operators in HQET Open
A bstract X -space schemes are gauge-invariant, regulator-independent renormalization schemes that are defined by requiring position-space correlation functions of gauge-invariant operators to be equal to their noninteracting values at par…
View article: Long-distance nuclear matrix elements for neutrinoless double-beta decay from lattice QCD
Long-distance nuclear matrix elements for neutrinoless double-beta decay from lattice QCD Open
Neutrinoless double-beta (0νββ) decay is a heretofore unobserved process which, if observed, would imply that neutrinos are Majorana particles. Interpretations of the stringent experimental constraints on 0νββ-decay half-lives require calc…
View article: Multiparticle interpolating operators in quantum field theories with cubic symmetry
Multiparticle interpolating operators in quantum field theories with cubic symmetry Open
Numerical studies of lattice quantum field theories are conducted in finite spatial volumes, typically with cubic symmetry in the spatial coordinates. Motivated by these studies, this work presents a general algorithm to construct multipar…
View article: LDIC Survey 2023: Feeling Welcome in the Community
LDIC Survey 2023: Feeling Welcome in the Community Open
We review the level of welcomeness that members of the lattice field theory community feel based on the results of a survey performed in May and June 2023. While respondents reported generally high levels of feeling welcome at the lattice …
View article: Position-space renormalization schemes for four-quark operators in HQET
Position-space renormalization schemes for four-quark operators in HQET Open
X-space schemes are gauge-invariant, regulator-independent renormalization schemes that are defined by requiring position-space correlation functions of gauge invariant operators to be equal to their noninteracting values at particular kin…
View article: Constraints on the finite volume two-nucleon spectrum at $m_π\approx 806$ MeV
Constraints on the finite volume two-nucleon spectrum at $m_π\approx 806$ MeV Open
The low-energy finite-volume spectrum of the two-nucleon system at a quark mass corresponding to a pion mass of $m_π\approx 806$ MeV is studied with lattice quantum chromodynamics (LQCD) using variational methods. The interpolating-operato…
View article: The present and future of QCD
The present and future of QCD Open
This White Paper presents an overview of the current status and future perspective of QCD research, based on the community inputs and scientific conclusions from the 2022 Hot and Cold QCD Town Meeting. We present the progress made in the l…
View article: Irrep Projection for Multi-Hadron Interpolators (MHI)
Irrep Projection for Multi-Hadron Interpolators (MHI) Open
This package is associated with the paper: W. Detmold, W. I. Jay, G. Kanwar, P. E. Shanahan, and M. L. Wagman,"Multi-particle interpolating operators in quantum field theories with cubic symmetries." Phys. Rev. D 109, 094516 – Published 31…
View article: Correlation function distributions for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>O</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>N</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math> lattice field theories in the disordered phase
Correlation function distributions for lattice field theories in the disordered phase Open
Numerical computations in strongly interacting quantum field theories are often performed using Monte Carlo sampling methods. A key task in these calculations is to estimate the value of a given physical quantity from the distribution of s…
View article: Signal-to-noise improvement through neural network contour deformations for 3D 𝑺𝑼(2) lattice gauge theory
Signal-to-noise improvement through neural network contour deformations for 3D 𝑺𝑼(2) lattice gauge theory Open
Complex contour deformations of the path integral have been demonstrated to significantly improve the signal-to-noise ratio of observables in previous studies of two-dimensional gauge theories with open boundary conditions. In this work, n…
View article: LDIC Survey 2023: Feeling Welcome in the Community
LDIC Survey 2023: Feeling Welcome in the Community Open
We review the level of welcomeness that members of the lattice field theory community feel based on the results of a survey performed in May and June 2023. While respondents reported generally high levels of feeling welcome at the lattice …
View article: Lattice quantum chromodynamics at large isospin density
Lattice quantum chromodynamics at large isospin density Open
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 numerically stable and allows for the computation of n-pion …
View article: Lattice QCD Constraints on the Fourth Mellin Moment of the Pion Light Cone Distribution Amplitude using the HOPE method
Lattice QCD Constraints on the Fourth Mellin Moment of the Pion Light Cone Distribution Amplitude using the HOPE method Open
The light-cone distribution amplitude (LCDA) of the pion contains information about the parton momentum carried by the quarks and is an important theoretical input for various predictions of exclusive processes at high energy, including th…
View article: Signal-to-noise improvement through neural network contour deformations for 3D $SU(2)$ lattice gauge theory
Signal-to-noise improvement through neural network contour deformations for 3D $SU(2)$ lattice gauge theory Open
Complex contour deformations of the path integral have been demonstrated to significantly improve the signal-to-noise ratio of observables in previous studies of two-dimensional gauge theories with open boundary conditions. In this work, n…
View article: Constraint of pionless EFT using two-nucleon spectra from lattice QCD
Constraint of pionless EFT using two-nucleon spectra from lattice QCD Open
Finite-volume pionless effective field theory (FVEFTπ/) at next-to-leading order (NLO) is used to analyze the two-nucleon lattice QCD spectrum of Ref. [1], performed at quark masses corresponding to a pion mass of approximately 800 MeV. Sp…
View article: Lattice quantum chromodynamics at large isospin density: 6144 pions in a box
Lattice quantum chromodynamics at large isospin density: 6144 pions in a box Open
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 numerically stable and allows for the computation of $n$-pio…
View article: Low energy scattering phase shifts for meson-baryon systems
Low energy scattering phase shifts for meson-baryon systems Open
In this work, we calculate meson-baryon scattering phase shifts in four channels using lattice QCD methods. From a set of calculations at four volumes, corresponding to spatial sizes of 2, 2.5, 3, and 4 fm, and a pion mass of mπ∼390 MeV, w…
View article: The case for an EIC Theory Alliance: Theoretical Challenges of the EIC
The case for an EIC Theory Alliance: Theoretical Challenges of the EIC Open
We outline the physics opportunities provided by the Electron Ion Collider (EIC). These include the study of the parton structure of the nucleon and nuclei, the onset of gluon saturation, the production of jets and heavy flavor, hadron spe…
View article: Variational study of two-nucleon systems with lattice QCD
Variational study of two-nucleon systems with lattice QCD Open
The low-energy spectrum and scattering of two-nucleon systems are studied\nwith lattice quantum chromodynamics using a variational approach. A wide range\nof interpolating operators are used: dibaryon operators built from products of\nplan…
View article: Constraint of pionless EFT using two-nucleon spectra from lattice QCD
Constraint of pionless EFT using two-nucleon spectra from lattice QCD Open
Finite-volume pionless effective field theory (FVEFT$_{ π\!/ }$) at next-to-leading order (NLO) is used to analyze the two-nucleon lattice QCD spectrum of Ref.~\cite{Amarasinghe:2021lqa}, performed at quark masses corresponding to a pion m…
View article: Computing the Properties of Matter with Leadership Computing Resources (Closeout Report for DE-SC0018121)
Computing the Properties of Matter with Leadership Computing Resources (Closeout Report for DE-SC0018121) Open
In order to add more capabilities to Halide, we have designed a new framework called Tiramisu and integrated this framework into Halide. Since Tiramisu enables Halide to target heterogeneous architectures, our development efforts have been…