Hybrid static potentials in SU(2) lattice gauge theory at short quark-antiquark separationsWe compute hybrid static potentials in SU(2) lattice gauge theory using a multilevel algorithm and three different small lattice spacings. The resulting static potentials, which are valid for…Carolin Riehl, Marc Wagner·Aug 27, 2020SaveLearn
Sensitivity of the Polyakov loop and related observables to chiral symmetry restorationWhile the Polyakov loop is an order parameter of the deconfinement transition in the heavy quark mass regime of QCD, its sensitivity to the deconfinement of light, dynamical quarks in QCD is not…David Anthony Clarke, Olaf Kaczmarek, Frithjof Karsch et al.·Aug 26, 2020SaveLearn
Real-time simulation of (2+1)-dimensional lattice gauge theory on qubitsWe study the quantum simulation of Z2 lattice gauge theory in 2+1 dimensions. The dual variable formulation, the so-called Wegner duality, is utilized for reducing redundant gauge degrees of freedom.…Arata Yamamoto·Aug 26, 2020SaveLearn
Nuclear matrix elements from lattice QCD for electroweak and beyond-Standard-Model processesOver the last decade, numerical solutions of Quantum Chromodynamics (QCD) using the technique of lattice QCD have developed to a point where they are beginning to connect fundamental aspects of…Zohreh Davoudi, William Detmold, Kostas Orginos et al.·Aug 25, 2020SaveLearn
Construction of bbud tetraquark states on lattice with NRQCD bottom and HISQ up/down quarksWe construct bbud states on lattice using NRQCD action for bottom and HISQ action for the light up/down quarks. The NRQCD-HISQ tetraquark operators are constructed for "bound"…Protick Mohanta, Subhasish Basak·Aug 25, 2020SaveLearn
Unpolarized and helicity generalized parton distributions of the proton within lattice QCDWe present the first calculation of the x-dependence of the proton generalized parton distributions (GPDs) within lattice QCD. Results are obtained for the isovector unpolarized and helicity GPDs.…Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou et al.·Aug 24, 2020SaveLearn
Alternating Descent Method for Gauge Cooling of Complex Langevin SimulationsWe study the gauge cooling technique for the complex Langevin method applied to the computation in lattice quantum chromodynamics. We propose a new solver of the minimization problem that optimizes…Xiaoyu Dong, Zhenning Cai, Yana Di·Aug 15, 2020SaveLearn
P-Wave Two-Particle Bound and Scattering States in a Finite Volume including QEDThe mass shifts for two-fermion bound and scattering P-wave states subject to the long-range interactions due to QED in the non-relativistic regime are derived. Introducing a short range force…Gianluca Stellin, Ulf-G. Meißner·Aug 14, 2020SaveLearn
DK I=0, DK I=0,1 scattering and the Ds0(2317) from lattice QCDElastic scattering amplitudes for I=0 DK and I=0,1 DK are computed in S, P and D partial waves using lattice QCD with light-quark masses corresponding to mπ = 239 MeV and…Gavin K. C. Cheung, Christopher E. Thomas, David J. Wilson et al.·Aug 14, 2020SaveLearn
Relative scale setting for two-color QCD with Nf=2 Wilson fermionsWe determine the scale setting function and the pseudo-critical temperature on the lattice in Nf=2 two-color QCD using the Iwasaki gauge and Wilson fermion actions. Although two-color QCD does not…Kei Iida, Etsuko Itou, Tong-Gyu Lee·Aug 14, 2020SaveLearn
Computation of the quarkonium and meson-meson composition of the (nS) states and of the new (10753) Belle resonance from lattice QCD static potentialsWe compute the composition of the bottomonium (nS) states (including (10860)) and the new (10753) resonance reported by Belle in terms of quarkonium and meson-meson…Pedro Bicudo, Nuno Cardoso, Lasse Mueller et al.·Aug 12, 2020SaveLearn
Sampling using SU(N) gauge equivariant flowsWe develop a flow-based sampling algorithm for SU(N) lattice gauge theories that is gauge-invariant by construction. Our key contribution is constructing a class of flows on an SU(N) variable (or…Denis Boyda, Gurtej Kanwar, Sébastien Racanière et al.·Aug 12, 2020SaveLearn
Charmed and φ meson decay constants from 2+1-flavor lattice QCDOn a lattice with 2+1-flavor dynamical domain-wall fermions at the physical pion mass, we calculate the decay constants of Ds(*), D(*) and φ. The lattice size is 483×96,…Ying Chen, Wei-Feng Chiu, Ming Gong et al.·Aug 12, 2020SaveLearn
On the application of Effective Field Theory to finite-volume effects in aμ HVPOne of the more important systematic effects affecting lattice computations of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, aμ HVP, is the…Christopher Aubin, Thomas Blum, Maarten Golterman et al.·Aug 9, 2020SaveLearn
Double-winding Wilson loops in SU(N) lattice Yang-Mills gauge theoryWe study double-winding Wilson loops in SU(N) lattice Yang-Mills gauge theory by using both strong coupling expansions and numerical simulations. First, we examine how the area law falloff of a…Seikou Kato, Akihiro Shibata, Kei-Ichi Kondo·Aug 9, 2020SaveLearn
From Ji to Jaffe-Manohar orbital angular momentum in Lattice QCD using a direct derivative methodA Lattice QCD approach to quark orbital angular momentum in the proton based on generalized transverse momentum-dependent parton distributions (GTMDs) is enhanced methodologically by incorporating a…M. Engelhardt, J. R. Green, N. Hasan et al.·Aug 9, 2020SaveLearn
Multilevel Monte Carlo for quantum mechanics on a latticeMonte Carlo simulations of quantum field theories on a lattice become increasingly expensive as the continuum limit is approached since the cost per independent sample grows with a high power of the…Karl Jansen, Eike Hermann Müller, Robert Scheichl·Aug 7, 2020SaveLearn
Scattering of two and three physical pions at maximal isospin from lattice QCDWe present the first direct Nf=2 lattice QCD computation of two- and three-π+ scattering quantities that includes an ensemble at the physical point. We study the quark mass dependence of the…Matthias Fischer, Bartosz Kostrzewa, Liuming Liu et al.·Aug 7, 2020SaveLearn
Lattice simulations of a gauge theory with mixed adjoint-fundamental matterIn this article we summarize our efforts in simulating Yang-Mills theories coupled to matter fields transforming under the fundamental and adjoint representations of the gauge group. In the context…Georg Bergner, Stefano Piemonte·Aug 6, 2020SaveLearn
Excited and exotic bottomonium spectroscopy from lattice QCDWe explore the spectrum of excited and exotic bottomonia using lattice QCD. Highly excited states are identified with masses up to 11,000 MeV, many of which can be grouped into supermultiplets…Sinéad M. Ryan, David J. Wilson·Aug 6, 2020SaveLearn
The analytic structure of the lattice Landau gauge gluon and ghost propagatorsStarting from the lattice Landau gauge gluon and ghost propagator data we use a sequence of Pad\'e approximants, identify the poles and zeros for each approximant and map them into the analytic…Alexandre F. Falcão, Orlando Oliveira, Paulo J. Silva·Aug 6, 2020SaveLearn
Renormalisation of the tensor current in lattice QCD and the J/ tensor decay constantLattice QCD calculations of form factors for rare Standard Model processes such as B K + - use tensor currents that require renormalisation. These renormalisation factors, ZT, have…D. Hatton, C. T. H. Davies, G. P. Lepage et al.·Aug 5, 2020SaveLearn
Replica evolution of classical field in 4+1 dimensional spacetime toward real time dynamics of quantum fieldReal-time evolution of replicas of classical field is proposed as an approximate simulator of real-time quantum field dynamics at finite temperatures. We consider N classical field configurations…Akira Ohnishi, Hidefumi Matsuda, Teiji Kunihiro et al.·Aug 5, 2020SaveLearn
Taylor expansions on Lefschetz thimbles (and not only that)Thimble regularisation is a possible solution to the sign problem, which is evaded by formulating quantum field theories on manifolds where the imaginary part of the action stays constant (Lefschetz…Francesco Di Renzo, Simran Singh, Kevin Zambello·Aug 4, 2020SaveLearn
The large N limit of SU(N) integrals in lattice modelsThe standard U(N) and SU(N) integrals are calculated in the large N limit. Our main finding is that for an important class of integrals this limit is different for two groups. We describe the…O. Borisenko, V. Chelnokov, S. Voloshyn·Aug 3, 2020SaveLearn