On light vector mesons and chiral SU(3) extrapolationsA chiral extrapolation of the light vector meson masses in the up, down and strange quark masses of QCD is presented. We apply an effective chiral Lagrangian based on the hadrogenesis conjecture to…Xiao-Yu Guo, Matthias F. M. Lutz·Oct 16, 2018SaveLearn
Beyond Thimbles: Sign-Optimized Manifolds for Finite DensityThe sign problem of relativistic field theories at finite fermion chemical potential has been approached by deforming the domain of integration into complex field space. We present a method for…Scott Lawrence·Oct 15, 2018SaveLearn
Progress report on the relativistic three-particle quantization conditionWe describe recent work on the relativistic three-particle quantization condition, generalizing and applying the original formalism of Hansen and Sharpe, and of Briceño, Hansen and Sharpe. In…Tyler D. Blanton, Raúl A. Briceño, Maxwell T. Hansen et al.·Oct 15, 2018SaveLearn
Follow-up on non-leptonic kaon decays at large NcWe report on the status of our dynamical simulations of a SU (Nc ) gauge theory with Nc=3-6 and Nf =4 fundamental fermions. These ensembles can be used to study the Large Nc scaling of…Fernando Romero-López, Andrea Donini, Pilar Hernández et al.·Oct 15, 2018SaveLearn
Flowing Gauge Theories: Finite-Density QED1+1Finite-density calculations in lattice field theory are typically plagued by sign problems. A promising way to ameliorate this issue is the holomorphic flow equations that deform the manifold of…Henry Lamm·Oct 14, 2018SaveLearn
SO(4) invariant Higgs-Yukawa model with reduced staggered fermionsWe explore the phase structure of a four dimensional SO(4) invariant lattice Higgs-Yukawa model comprising four reduced staggered fermions interacting with a real scalar field. The fermions belong…Nouman Butt, Simon Catterall, David Schaich·Oct 14, 2018SaveLearn
Theoretical aspects of quantum electrodynamics in a finite volume with periodic boundary conditionsFirst-principles studies of strongly-interacting hadronic systems using lattice quantum chromodynamics (QCD) have been complemented in recent years with the inclusion of quantum electrodynamics…Zohreh Davoudi, James Harrison, Andreas Jüttner et al.·Oct 13, 2018SaveLearn
HVP contribution of the light quarks to the muon (g - 2) including isospin-breaking corrections with Twisted-Mass fermionsWe present a preliminary lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the Hadronic Vacuum Polarization (HVP) contribution of the light quarks to…Davide Giusti, Vittorio Lubicz, Guido Martinelli et al.·Oct 13, 2018SaveLearn
Solving the PCAC puzzle for nucleon axial and pseudoscalar form factorsIt has been observed in multiple lattice determinations of isovector axial and pseudoscalar nucleon form factors, that, despite the fact that the partial conservation of the axialvector current is…G. S. Bali, S. Collins, M. Gruber et al.·Oct 12, 2018SaveLearn
Renormalization of CP-Violating Pure Gauge Operators in Perturbative QCD Using the Gradient FlowWe use the Yang-Mills gradient flow to study the mixing of CP-violating pure gauge operators in continuum QCD with special attention to Weinberg's d=6 purely gluonic operator. The gradient flow…Matthew Rizik, Christopher Monahan, Andrea Shindler·Oct 12, 2018SaveLearn
The large-mass regime of confining but nearly conformal gauge theoriesWe apply a recently developed dilaton-pion effective field theory for asymptotically free gauge theories near the conformal window to the SU(3) gauge theory with Nf=8 fermions in the fundamental…Maarten Golterman, Yigal Shamir·Oct 12, 2018SaveLearn
Determination of the Nf=12 step scaling function using Möbius domain wall fermionsWe calculate the renormalized step scaling function for twelve fundamental flavors nonperturbatively by determining the gradient flow coupling on gauge field configurations generated with dynamical…Anna Hasenfratz, Claudio Rebbi, Oliver Witzel·Oct 11, 2018SaveLearn
Nucleon Transversity Distribution at the Physical Pion Mass from Lattice QCDWe report a state-of-the-art lattice calculation of the isovector quark transversity distribution of the proton at the physical pion mass. Within the framework of large-momentum effective theory…Yu-Sheng Liu, Jiunn-Wei Chen, Luchang Jin et al.·Oct 11, 2018SaveLearn
Pfaffian particles and strings in SO(2N) gauge theoriesWe introduce (generalised) Pfaffian operators into our lattice calculations of the mass spectra and confining string tensions of SO(2N) gauge theories, complementing the conventional trace operators…Michael Teper·Oct 10, 2018SaveLearn
Gluon gravitational form factors of the nucleon and the pion from lattice QCDA future Electron-Ion Collider will enable the gluon contributions to the gravitational form factors of the proton to be constrained experimentally for the first time. Here, the first calculation of…P. E. Shanahan, W. Detmold·Oct 10, 2018SaveLearn
Nucleon electromagnetic form factors at high Q2 from Wilson-clover fermionsWe present results on the nucleon electromagnetic form factors from Lattice QCD at momentum transfer up to about 12~GeV2. We analyze two gauge ensembles with the Wilson-clover fermion action, a…Christos Kallidonis, Sergey Syritsyn, Michael Engelhardt et al.·Oct 9, 2018SaveLearn
NΩ dibaryon from lattice QCD near the physical pointThe nucleon(N)-Omega(Ω) system in the S-wave and spin-2 channel (5S2) is studied from the (2+1)-flavor lattice QCD with nearly physical quark masses (mπ 146~MeV and $mK …Takumi Iritani, Sinya Aoki, Takumi Doi et al.·Oct 8, 2018SaveLearn
Hyperon-Nucleon Interaction from Lattice QCD at (mπ,mK)≈(146,525) MeVComprehensive study of generalized baryon-baryon (BB) interaction including strangeness is one of the important subject of nuclear physics. In order to obtain a complete set of isospin-base baryon…Hidekatsu Nemura·Oct 8, 2018SaveLearn
Progress in the Nucleon Electric Dipole Moment Calculations in Lattice QCDElectric dipole moments (EDMs), which are sought as evidence of CP violation, require lattice calculations to connect constraints from experiments to limits on the strong CP violation within QCD or…S. Syritsyn, T. Izubuchi, H. Ohki·Oct 8, 2018SaveLearn
CP violation in QCDAmong the parameters of QCD is one that results in CP violation when non-vanishing. This is closely related to possible quark mass terms. It is conventionally interpreted in terms of gauge field…Michael Creutz·Oct 8, 2018SaveLearn
ZS/ZP from three-flavour lattice QCDWe report on advances in the non-perturbative determination of the ratio ZS/ZP of the pseudoscalar to the scalar renormalization constants in three-flavour lattice QCD with Wilson-clover quarks…Jochen Heitger, Fabian Joswig, Anastassios Vladikas·Oct 8, 2018SaveLearn
Numerical study of the N=2 Landau--Ginzburg model with two superfieldsIn the low energy limit, the two-dimensional massless N=2 Wess--Zumino (WZ) model with a quasi-homogeneous superpotential is believed to become a superconformal field theory. This…Okuto Morikawa·Oct 5, 2018SaveLearn
Realistic in-medium heavy-quark potential from high statistics lattice QCD simulationsWe present our first results on a direct computation of the complex in-medium heavy quark potential from realistic lattice QCD simulations. Ensembles with Nτ=12 from the HotQCD and TUMQCD…Peter Petreczky, Alexander Rothkopf, Johannes Weber·Oct 4, 2018SaveLearn
Simulating the weak death of the neutron in a femtoscale universe with near-Exascale computingThe fundamental particle theory called Quantum Chromodynamics (QCD) dictates everything about protons and neutrons, from their intrinsic properties to interactions that bind them into atomic nuclei.…Evan Berkowitz, M. A. Clark, Arjun Gambhir et al.·Oct 3, 2018SaveLearn
A Lattice QCD study of the ρ resonanceWe present a lattice QCD study of the ρ resonance with Nf=2+1 clover fermions at a pion mass of approximately 320 MeV and lattice size 3.6 fm. We consider two processes involving the ρ.…Luka Leskovec, Constantia Alexandrou, Stefan Meinel et al.·Oct 3, 2018SaveLearn