103 citations · 701 across the 29 of their papers we have counts for
33 papers
Chiral susceptibility and axial U(1) anomaly near the (pseudo-)critical temperature
S. Aoki, Y. Aoki, H. Fukaya +6
We investigate relations between the chiral susceptibility and axial anomaly in lattice QCD at high temperatures. Employing the exactly chiral symmetric Dirac operator, we s…
The Compton amplitude and nucleon structure functions in lattice QCD
K. U. Can, M. Batelaan, A. Hannaford-Gunn +8
The structure of hadrons relevant for deep-inelastic scattering are completely characterised by the Compton amplitude. A direct calculation of the Compton amplitude in a lattice QC…
Feynman--Hellmann approach to transition matrix elements and quasi-degenerate energy states
M. Batelaan, K. U. Can, R. Horsley +6
The Feynman--Hellmann approach to computing matrix elements in lattice QCD by first adding a perturbing operator to the action is described using the transition matrix and the Dyso…
Weak decay constants of the neutral pseudoscalar mesons from lattice QCD+QED
Z. R. Kordov, R. Horsley, W. Kamleh +7
With increasing requirements for greater precision, it becomes essential to describe the effects of isospin breaking induced by both quark masses and electro-magnetic effects. In t…
Constraining beyond the Standard Model nucleon isovector charges
R. E. Smail, M. Batelaan, R. Horsley +8
At the TeV scale, low-energy precision observations of neutron characteristics provide unique probes of novel physics. Precision studies of neutron decay observables are susceptibl…
Quasi-degenerate baryon energy states, the Feynman--Hellmann theorem and transition matrix elements
M. Batelaan, K. U. Can, R. Horsley +7
The standard method for determining matrix elements in lattice QCD requires the computation of three-point correlation functions. This has the disadvantage of requiring two large t…
Moments and power corrections of longitudinal and transverse proton structure functions from lattice QCD
M. Batelaan, K. U. Can, A. Hannaford-Gunn +8
We present a simultaneous extraction of the moments of and structure functions of the proton for a range of photon virtuality, . This is achieved by computing the…
Advances in lattice hadron physics calculations using the gradient flow
K. U. Can, R. Horsley, Y. Nakamura +6
Lattice calculations of hadronic observables are aggravated by short-distance fluctuations. The gradient flow, which can be viewed as a particular realisation of the coarse-grainin…
State mixing and masses of the , and mesons from lattice QCD+QED
Z. R. Kordov, R. Horsley, W. Kamleh +8
We present a lattice analysis of the light pseudoscalar mesons with consideration for the mixing between the flavour-neutral states , and . We extract the masses…
The strong CP problem solved by itself due to long-distance vacuum effects
Y. Nakamura, G. Schierholz
The vacuum of quantum chromodynamics has an incredibly rich structure at the nonperturbative level, which is intimately connected with the topology of gauge fields, and put to a te…
Self-Energy Renormalization for Inhomogeneous Nonequilibrium Systems and Field Expansion via Complete Set of Time-Dependent Wave Functions
Y. Kuwahara, Y. Nakamura, Y. Yamanaka
The renormalization conditions of inhomogeneous systems of a quantum field under an external potential are studied, for both equilibrium and nonequilibrium scenarios and based on T…
Electromagnetic form factors at large momenta from lattice QCD
A. J. Chambers, J. Dragos, R. Horsley +10
Accessing hadronic form factors at large momentum transfers has traditionally presented a challenge for lattice QCD simulations. Here we demonstrate how a novel implementation of t…
Flavour breaking effects in the pseudoscalar meson decay constants
V. G. Bornyakov, R. Horsley, Y. Nakamura +7
The SU(3) flavour symmetry breaking expansion in up, down and strange quark masses is extended from hadron masses to meson decay constants. This allows a determination of the ratio…
Thermal and quantum fluctuations of confined Bose-Einstein condensate beyond the Bogoliubov approximation
Y. Nakamura, T. Kawaguchi, Y. Torii +1
The formulation for zero mode of a Bose-Einstein condensate beyond the Bogoliubov approximation at zero temperature [Y.Nakamura et al., Phys. Rev. A 89, 013613 (2014)] is extended…
Determining the scale in Lattice QCD
V. G. Bornyakov, R. Horsley, R. Hudspith +8
We discuss scale setting in the context of 2+1 dynamical fermion simulations where we approach the physical point in the quark mass plane keeping the average quark mass constant. W…
QED effects in the pseudoscalar meson sector
R. Horsley, Y. Nakamura, H. Perlt +8
We present results on the pseudoscalar meson masses from a fully dynamical simulation of QCD+QED. We concentrate particularly on violations of isospin symmetry. We calculate the $π…
Disconnected contributions to the spin of the nucleon
A. J. Chambers, R. Horsley, Y. Nakamura +8
The spin decomposition of the proton is a long-standing topic of much interest in hadronic physics. Lattice QCD has had much success in calculating the connected contributions to t…
Isospin splittings of meson and baryon masses from three-flavor lattice QCD + QED
R. Horsley, Y. Nakamura, H. Perlt +8
Lattice QCD simulations are now reaching a precision where isospin breaking effects become important. Previously, we have developed a program to systematically investigate the patt…
Reply to "Comment on `Lattice determination of Sigma - Lambda mixing' "
R. Horsley, J. Najjar, Y. Nakamura +7
In this Reply, we respond to the above Comment. Our computation [Phys. Rev. D 91 (2015) 074512] only took into account pure QCD effects, arising from quark mass differences, so it…
The electric dipole moment of the neutron from 2+1 flavor lattice QCD
F. -K. Guo, R. Horsley, U. -G. Meissner +6
We compute the electric dipole moment d_n of the neutron from a fully dynamical simulation of lattice QCD with 2+1 flavors of clover fermions and nonvanishing theta term. The latte…
A lattice determination of Sigma - Lambda mixing
R. Horsley, J. Najjar, Y. Nakamura +7
Isospin breaking effects in baryon octet (and decuplet) masses are due to a combination of up and down quark mass differences and electromagnetic effects and lead to small mass spl…
Effective field theory of Bose-Einstein condensation of clusters and Nambu-Goldstone-Higgs states in C
Y. Nakamura, J. Takahashi, Y. Yamanaka +1
An effective field theory of cluster condensation is formulated as a spontaneously broken symmetry in quantum field theory to understand the raison d'etre and nature of the Hoy…
A Feynman-Hellmann approach to the spin structure of hadrons
A. J. Chambers, R. Horsley, Y. Nakamura +8
We perform a Nf = 2 + 1 lattice QCD simulation to determine the quark spin fractions of hadrons using the Feynman-Hellmann theorem. By introducing an external spin operator to the…
Determination of the strange nucleon form factors
P. E. Shanahan, R. Horsley, Y. Nakamura +7
The strange contribution to the electric and magnetic form factors of the nucleon is determined at a range of discrete values of up to GeV. This is done by combinin…