172 citations · 863 across the 42 of their papers we have counts for
42 papers
General Hamiltonian Approach to the -Body Finite-Volume Formalism: Extracting the Resonance Parameters from Lattice QCD
Kang Yu, Derek B. Leinweber, Anthony W. Thomas +3
We present a nonperturbative Hamiltonian framework (NPHF) to address the general -body problem. This framework rigorously connects finite-volume spectra from lattice QCD to scat…
Lattice QCD constraints on pion electroproduction off a nucleon
Yu Zhuge, Zhan-Wei Liu, Derek B. Leinweber +1
Very recently, a lattice QCD collaboration has explored threshold pion electroproduction near the physical pion mass and has simulated the relevant multipole amplitudes. Different…
Pion photoproduction of nucleon excited states with Hamiltonian effective field theory
Yu Zhuge, Dan Guo, Zhan-Wei Liu +2
Over the past few years, Hamiltonian effective field theory has been successfully applied to studies of nucleon and hyperon excited states. By discretizing the Hamiltonian in a fin…
Novel insight into centre-vortex geometry in four dimensions
Jackson A. Mickley, Chris Allton, Ryan Bignell +1
Centre-vortex surfaces are mapped out in four dimensions within the framework of SU(3) lattice gauge theory to understand the role of secondary loops that develop in three-dimensio…
Structure of the with Hamiltonian Effective Field Theory
Fang-Chao Han, Zhan-Wei Liu, Derek B. Leinweber +1
We investigate the internal structure of the by analyzing lattice QCD simulation and experimental data within Hamiltonian effective field theory, considering both $J^P…
Center vortices in the novel phase of staggered fermions
Jackson A. Mickley, Derek B. Leinweber, Daniel Nogradi
The geometry of center vortices is studied in the novel lattice-artefact phase that appears with staggered fermions to elucidate any insight provided by the center-vortex degrees o…
Centre vortices in thermal lattice QCD with dynamical fermions
Jackson Mickley, Chris Allton, Ryan Bignell +1
Evidence for a second finite-temperature transition in Quantum Chromodynamics (QCD) is revealed through the study of centre vortex geometry and its temperature-dependent evolution.…
Distorted Sounds: Unlocking the Physics of Modern Music
Anna Mullin, Derek Leinweber
In the production of modern music, the musical characteristics of the guitar or keyboard amplifier play an integral role in the creative process. This article explores the physics…
The temperature dependence of fractional topological charge objects
Jackson A. Mickley, Waseem Kamleh, Derek B. Leinweber
We present a novel method for defining the topological charge contained within distinct topological objects in the nontrivial ground-state fields of SU(N) lattice gauge theory. Suc…
SU(3) centre vortex geometry at finite temperature
Jackson A. Mickley, Waseem Kamleh, Derek B. Leinweber
The importance of examining the structure of centre-vortex matter in the ground-state fields of nonabelian gauge-field theory has been demonstrated in the recent centre-vortex base…
Nucleon resonance structure to 2 GeV and the nature of the Roper
Shiryo Owa, Derek B. Leinweber, Anthony W. Thomas
The study of the spectrum of excited states of the nucleon is vital to our understanding of how QCD is realized in the baryon spectrum. Using a simultaneous analysis of the pion nu…
Spectral parameters of the resonance from lattice QCD
Zhengli Wang, Derek B. Leinweber, Chuan Liu +6
We present a lattice QCD investigation of the resonance using nine Wilson-Clover ensembles with three lattice spacings and various pion masses ranging from …
Structure of center-vortex matter in SU(4) Yang-Mills theory
Jackson A. Mickley, Derek B. Leinweber, Luis E. Oxman
The structure of center vortices is studied in SU(4) Yang-Mills theory for the first time to illuminate the interplay between elementary (center charge ) and doubly charged…
Center vortices and the conformal window
J. A. Mickley, D. B. Leinweber, D. Nogradi
A novel approach for estimating the lower end of the conformal window is presented through the study of center vortex geometry and its dependence on the number of…
Physical interpretation of the 2s excitation of the nucleon
Finn M. Stokes, Waseem Kamleh, Derek B. Leinweber +1
Lattice QCD calculations of the radial excitation of the nucleon place the state at an energy of approximately 1.9 GeV, raising the possibility that it is associated with the…
Magnetic polarisability of octet baryons near the physical quark-mass point
Thomas Kabelitz, Waseem Kamleh, Derek Leinweber
The magnetic polarisabilities of octet baryons are calculated close to the physical quark-mass point using the background field method in lattice QCD. This first calculation draws…
Exploring the spectrum in lattice QCD
Liam Hockley, Waseem Kamleh, Derek Leinweber +1
We present an exploratory lattice QCD analysis of the -baryon spectrum. Using smeared three-quark operators in a correlation matrix analysis, we report masses for the ground, f…
Pion photoproduction of nucleon excited states with Hamiltonian effective field theory
Yu Zhuge, Zhan-Wei Liu, Derek B. Leinweber +1
We refine our previous calculation of multipole amplitude for pion photoproduction process, . The treatment of final-state interactions is based upon an e…
Magnetic Polarisability of Octet Baryons via Lattice QCD
Thomas Kabelitz, Ryan Bignell, Waseem Kamleh +1
Drawing on recent advances in lattice-QCD background-field techniques, the magnetic polarisability of octet baryons is calculated from the first principles of QCD. The results are…
Understanding the nature of the resonance
Liam Hockley, Curtis Abell, Derek Leinweber +1
We present a coupled-channel analysis of the -baryon spectrum, based in the framework of Hamiltonian Effective Field Theory (HEFT). We construct a Hamiltonian which…
Understanding the nature of baryon resonances
Derek B. Leinweber, Curtis D. Abell, Liam C. Hockley +5
This presentation opens with a brief review of lattice QCD calculations showing the radial excitation of the nucleon sits at approximately 2 GeV, well above the Roper resonanc…
Searching for the first radial excitation of the in lattice QCD
Liam Hockley, Waseem Kamleh, Derek Leinweber +1
We present a lattice QCD analysis of the -baryon spectrum, with the goal of finding the position of the radial excitation of the ground state. Using smeared…
Structure of the resonance
Jiong-Jiong Liu, Zhan-Wei Liu, Kan Chen +4
We examine the internal structure of the through an analysis of lattice QCD simulations and experimental data within Hamiltonian effective field theory. Two scenarios are…
Study of the pion-mass dependence of -meson properties in lattice QCD
Kang Yu, Yan Li, Jia-Jun Wu +2
We collect spectra extracted in the sector provided by various lattice QCD collaborations and study the dependence of -meson properties using Hamiltonian E…