Novel |Vus| Determination Using Inclusive Strange τ Decay and Lattice HVPsWe propose and apply a new approach to determining |Vus| using dispersion relations with weight functions having poles at Euclidean (space-like) momentum which relate strange hadronic τ decay…Peter Boyle, Renwick James Hudspith, Taku Izubuchi et al.·Mar 20, 2018SaveLearn
Rotor Spectra and Berry Phases in the Chiral Limit of QCD on a TorusWe consider the finite-volume spectra of QCD in the chiral limit of massless up and down quarks and massive strange quarks in the baryon number sectors B = 0 and B = 1 for different values of the…Nadiia Vlasii, Uwe-Jens Wiese·Mar 16, 2018SaveLearn
Distribution of Stress Tensor around Static Quark--Anti-Quark from Yang-Mills Gradient FlowThe spatial distribution of the stress tensor around the quark--anti-quark (QQ) pair in SU(3) lattice gauge theory is studied. The Yang-Mills gradient flow plays a crucial role to make the…Ryosuke Yanagihara, Takumi Iritani, Masakiyo Kitazawa et al.·Mar 15, 2018SaveLearn
Combining the color structures and intersection points of thick center vortices and low-lying Dirac modesWe investigate several examples of Yang-Mills gauge configurations containing center vortex structures, including intersection points between vortices and nontrivial color structures residing on the…Seyed Mohsen Hosseini Nejad·Mar 15, 2018SaveLearn
SU(3) Quantum Spin Ladders as a Regularization of the CP(2) Model at Non-Zero Density: From Classical to Quantum SimulationQuantum simulations would be highly desirable in order to investigate the finite density physics of QCD. (1+1)-d CP(N-1) quantum field theories are toy models that share many important…Wynne Evans, Urs Gerber, Manes Hornung et al.·Mar 13, 2018SaveLearn
Lattice Calculation of Parton Distribution Function from LaMET at Physical Pion Mass with Large Nucleon MomentumWe present a lattice-QCD calculation of the unpolarized isovector parton distribution function (PDF) using ensembles at the physical pion mass with large proton boost momenta $Pz ∈…Jiunn-Wei Chen, Luchang Jin, Huey-Wen Lin et al.·Mar 12, 2018SaveLearn
Numerical study of the relativistic three-body quantization condition in the isotropic approximationWe present numerical results showing how our recently proposed relativistic three-particle quantization condition can be used in practice. Using the isotropic (generalized s-wave) approximation,…Raúl A. Briceño, Maxwell T. Hansen, Stephen R. Sharpe·Mar 12, 2018SaveLearn
Colour fields of the quark-antiquark excited flux tubeWe present colour field density profiles for some of the first SU(3) gluonic excitations of the flux tube in the presence of a static quark-antiquark pair. The results are obtained from a large set…Pedro Bicudo, Marco cardoso, Nuno Cardoso·Mar 12, 2018SaveLearn
Tensor form factor of D π(K) ν and D π(K) decays with Nf=2+1+1 twisted-mass fermionsWe present the first lattice Nf=2+1+1 determination of the tensor form factor fTD π(K)(q2) corresponding to the semileptonic and rare D π(K) decays as a function of the squared…V. Lubicz, L. Riggio, G. Salerno et al.·Mar 10, 2018SaveLearn
Parity anomaly cancellation in a three-dimensional QED with single massless Dirac fermionWe study a three-dimensional non-compact QED with a single two-component massless fermion and two infinitely massive regulator fermions of half the charge using lattice overlap formalism. The parity…Nikhil Karthik, Rajamani Narayanan·Mar 9, 2018SaveLearn
Leptonic Ds decays in two-flavour lattice QCDWe report on a two-flavour lattice QCD study of the Ds and Ds* leptonic decays parameterized by the decay constants fDs and fDs*. As the phenomenology in the Ds sector seems very…Benoit Blossier, Jochen Heitger, Matthias Post·Mar 8, 2018SaveLearn
Extraction of isoscalar ππ phase-shifts from lattice QCDWe conduct a two-flavor (Nf=2) lattice QCD calculation of the elastic phase-shifts for pion-pion scattering in the scalar, isoscalar channel (the σ-meson). The calculation is performed for two…Dehua Guo, Andrei Alexandru, Raquel Molina et al.·Mar 7, 2018SaveLearn
Reconstruction of light-cone parton distribution functions from lattice QCD simulations at the physical pointWe present the unpolarized and helicity parton distribution functions calculated within lattice QCD simulations using physical values of the light quark mass. Non-perturbative renormalization is…Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou et al.·Mar 7, 2018SaveLearn
High Precision Statistical Landau Gauge Lattice Gluon Propagator Computation vs. the Gribov-Zwanziger approachThe compatibility of the results from the Gribov-Zwanziger tree level prediction and lattice simulations, using large statistical ensembles, for the Landau gauge gluon propagator are investigated,…David Dudal, Orlando Oliveira, Paulo J. Silva·Mar 6, 2018SaveLearn
Three-particle Nππ state contribution to the nucleon two-point function in lattice QCDThe three-particle Nππ-state contribution to the QCD two-point function of standard nucleon interpolating fields is computed to leading order in chiral perturbation theory. Using the experimental…Oliver Bar·Feb 28, 2018SaveLearn
Comment on "The QCD axion beyond the classical level: A lattice study"We rebut the claim by Nakamura and Schierholz [1] that the mass of a potential axion needs to be no less than ~230MeV pointing out errors in both their analytic argument and numerical simulations.Ch. Hoelbling, A. Pasztor·Feb 27, 2018SaveLearn
Baryon bags in strong coupling QCDWe discuss lattice QCD with one flavor of staggered fermions and show that in the path integral the baryon contributions can be fully separated from quark and diquark contributions. The baryonic…Christof Gattringer·Feb 26, 2018SaveLearn
Lattice QCD with QCDLABQCDLAB is a set of programs, written in GNU Octave, for lattice QCD computations. Version 2.0 includes the generation of configurations for the SU(3) theory, computation of rectangle Wilson loops as…Artan Borici·Feb 26, 2018SaveLearn
The QCD axion beyond the classical level: A lattice studyThe axion is a hypothetical elementary particle postulated by the Peccei-Quinn theory to resolve the strong CP problem in QCD. If axions exist and have low mass, they are a candidate for dark matter…Y. Nakamura, G. Schierholz·Feb 26, 2018SaveLearn
Finite-temperature phase structure of SU(4) gauge theory with multiple fermion representationsWe investigate the phase structure of SU(4) gauge theory with the gauge field simultaneously coupled to two flavors of fermion in the fundamental representation and two flavors of fermion in the…Venkitesh Ayyar, Thomas DeGrand, Daniel C. Hackett et al.·Feb 26, 2018SaveLearn
Lost in NormalizationThe consequences of the gauge-coupling dependent normalization-factor of 1/gα in the transfer-matrix of 2d U(1) lattice gauge theory are explored. It is seen by the α=1 choice that the lowest…Narges Vadood, Amir H. Fatollahi·Feb 23, 2018SaveLearn
Mass spectrum of 2-dimensional N=(2,2) super Yang-Mills theory on the latticeIn the present work we analyse N=(2,2) supersymmetric Yang-Mills (SYM) theory in two dimensions by means of lattice simulations. The theory arises as dimensional reduction of…D. August, M. Steinhauser, B. H. Wellegehausen et al.·Feb 21, 2018SaveLearn
High statistics lattice study of stress tensor correlators in pure SU(3) gauge theoryWe compute the Euclidean correlators of the stress tensor in pure SU(3) Yang-Mills theory at finite temperature at zero and finite spatial momenta with lattice simulations. We perform continuum…Szabolcs Borsanyi, Attila Pasztor, Zoltan Fodor et al.·Feb 21, 2018SaveLearn
Analysis of Ward identities in supersymmetric Yang-Mills theoryIn numerical investigations of supersymmetric Yang-Mills theory on a lattice, the supersymmetric Ward identities are valuable for finding the critical value of the hopping parameter and for examining…Sajid Ali, Georg Bergner, Henning Gerber et al.·Feb 20, 2018SaveLearn
Mass gap in the weak coupling limit of (2+1) SU(2) lattice gauge theoryWe develop the dual description of 2+1 SU(2) lattice gauge theory as interacting `abelian like' electric loops by using Schwinger bosons. "Point splitting" of the lattice enables us to…Ramesh Anishetty, T. P. Sreeraj·Feb 17, 2018SaveLearn