Fate of a recent conformal fixed point and β-function in the SU(3) BSM gauge theory with ten massless flavorsSU(3) gauge theory with Nf fermions in the fundamental representation serves as a theoretical testing ground for possible infrared conformal behavior, which could play a role in BSM composite…Zoltan Fodor, Kieran Holland, Julius Kuti et al.·Dec 10, 2018SaveLearn
Isovector and flavor diagonal charges of the nucleon from 2+1+1 flavor QCDWe present high-statistics results for the isovector and flavor diagonal charges of the proton using 11 ensembles of 2+1+1 flavor HISQ fermions. In the isospin symmetric limit, results for the…Rajan Gupta, Tanmoy Bhattacharya, Vincenzo Cirigliano et al.·Dec 9, 2018SaveLearn
The hadronic vacuum polarization contribution to (g-2)μ from 2+1 flavours of O(a) improved Wilson quarksWe report on our ongoing project to determine the leading-order hadronic vacuum polarisation contribution to the muon g-2, using ensembles with Nf=2+1 flavours of O(a) improved Wilson quarks…Antoine Gérardin, Tim Harris, Georg von Hippel et al.·Dec 9, 2018SaveLearn
HISQ 2+1+1 light quark hadronic vacuum polarization at the physical pointWe report on the computation of the light quark vacuum polarization with 2+1+1 flavors of H ISQ fermions at the physical point and its contribution to the muon anomalous magnetic moment. Three…Christopher Aubin, Thomas Blum, Maarten Golterman et al.·Dec 8, 2018SaveLearn
Dual Z2 Lattice Gauge Theory of the 3D Ising Model with both Nearest- and Next-Nearest-Neighbor CouplingsIt is known that the normal three-dimensional (3D) Ising model on a cubic lattice is dual to the Wegner's 3D Z2 lattice gauge theory. Here we find an unusual Z2 lattice gauge theory which…Changnan Peng·Dec 7, 2018SaveLearn
Worldline approach to few-body physics on the latticeWe study the physics of two species of non-relativistic hard-core bosons with attractive or repulsive delta function interactions on a spacetime lattice using the worldline formulation. By tuning the…Hersh Singh·Dec 6, 2018SaveLearn
Coupling to Multihadron States with Chiral FermionsChiral symmerty is presumed to be a crucial component in the strong interaction and QCD, but its role in spectroscopy, especially for baryons, has not been fully explored. Compounding this, chiral…Jacob Fallica, Keh-Fei Liu, Jian Liang et al.·Dec 5, 2018SaveLearn
Critical behavior of the hopping expansion from the Functional Renormalization GroupA lattice version of the widely used Functional Renormalization Group (FRG) for the Legendre effective action is solved - in principle exactly - in terms of graph rules for the linked cluster…Rudrajit Banerjee·Dec 5, 2018SaveLearn
Topological susceptibility at T>T c from master-field simulations of the SU(3) gauge theoryThe topological susceptibility is computed in the SU(3) gauge theory at temperatures T above the critical temperature T c using master-field simulations of very large lattices, where the…Leonardo Giusti, Martin Lüscher·Dec 5, 2018SaveLearn
Baryonic or quarkyonic matter?During the last years it has become possible to address the cold and dense regime of QCD directly for sufficiently heavy quarks, where combined strong coupling and hopping expansions are convergent…Owe Philipsen, Jonas Scheunert·Dec 5, 2018SaveLearn
Multi-level integration for meson propagatorsThe computation of many correlation functions in lattice QCD is severely hindered by a signal-to-noise problem. Recent developments in the factorization of both the fermion propagator and determinant…Leonardo Giusti, Tim Harris, Alessandro Nada et al.·Dec 5, 2018SaveLearn
Continuum extrapolation of the critical endpoint in 4-flavor QCD with Wilson-Clover fermionsWe report our study on the critical endpoint of the finite temperature phase transition in 4-flavor QCD with Wilson-Clover fermions. Using the kurtosis intersection method, we determined the critical…Hiroshi Ohno, Yoshinobu Kuramashi, Yoshifumi Nakamura et al.·Dec 4, 2018SaveLearn
Heavy-quark physics with a tmQCD valence actionWe introduce a mixed-action approach based on CLS ensembles, where a valence Nf=2+1+1 Twisted Mass QCD action is combined with the Nf=2+1 non-perturbatively O(a)-improved Wilson sea sector.…Andrea Bussone, Sergio Chaves, Gregorio Herdoíza et al.·Dec 4, 2018SaveLearn
Towards the P-wave nucleon-pion scattering amplitude in the Δ(1232) channelWe use lattice QCD and the Lüscher method to study elastic pion-nucleon scattering in the isospin I = 3/2 channel, which couples to the Δ(1232) resonance. Our Nf=2+1 flavor lattice setup…Srijit Paul, Giorgio Silvi, Constantia Alexandrou et al.·Dec 3, 2018SaveLearn
O(3) nonlinear sigma model in 1+1 dimensions with matrix product statesWe numerically study the spectral properties, the entanglement and the zero-temperature phase structure at nonvanishing chemical potential of the O(3) nonlinear sigma model. Using matrix product…Falk Bruckmann, Karl Jansen, Stefan Kühn·Dec 3, 2018SaveLearn
Taylor expansion and the Cauchy Residue Theorem for finite-density QCDWe present an update on our efforts to determine the Taylor coefficients of the μ/T expansion of the pressure for finite-density QCD. Here, we explore alternatives based on the Cauchy Residue…Philippe de Forcrand, Benjamin Jäger·Dec 3, 2018SaveLearn
Masses and decay constants of Bc(*) mesons with Nf=2+1+1 twisted mass fermionsWe present a preliminary lattice determination of the masses and decay constants of the pseudoscalar and vector mesons Bc and Bc*. Our analysis is based on the gauge configurations produced by…D. Becirevic, A. Melis, L. Riggio et al.·Dec 3, 2018SaveLearn
Ghost Sector in Minimal Linear Covariant GaugeWe discuss possible definitions of the Faddeev-Popov matrix for the minimal linear covariant gauge on the lattice and present preliminary results for the ghost propagator.Attilio Cucchieri, David Dudal, Tereza Mendes et al.·Dec 2, 2018SaveLearn
Lattice Calculation of the Proton Charge RadiusThe charge radius of the proton has been measured in scattering and spectroscopy experiments using both electronic and muonic probes. The electronic and muonic measurements are discrepant at 5σ,…William Detmold, Anthony Grebe, Phiala Shanahan·Dec 2, 2018SaveLearn
Tensor network study of two dimensional lattice ϕ4 theoryThe tensor renormalization group attracts great attention as a new numerical method that is free of the sign problem. In addition to this striking feature, it also has an attractive aspect as a…Ryo Sakai, Daisuke Kadoh, Yoshinobu Kuramashi et al.·Dec 1, 2018SaveLearn
Color screening in 2+1 flavor QCD at large distancesWe study correlation functions of spatially separated static quark-antiquark pairs in 2+1 flavor QCD in order to investigate the nature of color screening at high temperatures. We perform lattice…Sebastian Steinbeißer, Johannes Heinrich Weber·Nov 30, 2018SaveLearn
Exploring the phase diagram of finite density QCD at low temperature by the complex Langevin methodMonte Carlo studies of QCD at finite density suffer from the sign problem, which becomes easily uncontrollable as the chemical potential μ is increased even for a moderate lattice size. In this…Yuta Ito, Hideo Matsufuru, Jun Nishimura et al.·Nov 30, 2018SaveLearn
Lattice Landau gauge quark propagator at finite temperatureWe study the Landau gauge quark propagator, at finite temperature, using quenched lattice simulations. Special focus is given to the behaviour of the momentum space form factors across the…Paulo J. Silva, Orlando Oliveira·Nov 30, 2018SaveLearn
One-loop lattice study of composite bilinear operators in Supersymmetric QCDWe study 4-dimensional SQCD with gauge group SU(Nc) and Nf flavors of chiral supermultiplets on the lattice. We perform extensive calculations of matrix elements and renormalization factors of…Marios Costa, Haralambos Panagopoulos·Nov 30, 2018SaveLearn
String-like theory as solution to the sign problem of a finite density gauge theoryZ3 gauge theory with dynamical (bosonic) matter is studied in 4 dimensions with a finite chemical potential. This theory could be viewed as an effective theory describing the centre vortex picture of…Kurt Langfeld·Nov 30, 2018SaveLearn