2+1 Flavor Domain Wall Fermion QCD Lattices: Ensemble Production and (some) PropertiesThe RBC and UKQCD Collaborations continue to produce 2+1 flavor domain wall fermion ensembles, currently focusing on an ensemble with a 963 × 192 volume on SUMMIT at ORNL with $1/a ≈…Robert D. Mawhinney·Dec 31, 2019SaveLearn
Lattice computation of the quark propagator in Landau gauge at finite temperatureWe report on the lattice computation of the quark propagator at finite temperature in the Landau gauge, using quenched gauge configurations. The propagator form factors are computed for various…Paulo J. Silva, Orlando Oliveira·Dec 30, 2019SaveLearn
Investigation of complex ϕ4 theory at finite density in two dimensions using TRGWe study the two-dimensional complex ϕ4 theory at finite chemical potential using the tensor renormalization group. This model exhibits the Silver Blaze phenomenon in which bulk observables are…Daisuke Kadoh, Yoshinobu Kuramashi, Yoshifumi Nakamura et al.·Dec 30, 2019SaveLearn
News from bottomonium spectral functions in thermal QCDNew results on bottomonium at nonzero temperature are presented, using the FASTSUM Generation 2L ensembles. Preliminary results for spectral function reconstruction using Kernel Ridge Regression, a…Sam Offler, Gert Aarts, Chris Allton et al.·Dec 30, 2019SaveLearn
Classifying topological sector via machine learningWe employ a machine learning technique for an estimate of the topological charge Q of gauge configurations in SU(3) Yang-Mills theory in vacuum. As a first trial, we feed the four-dimensional…Masakiyo Kitazawa, Takuya Matsumoto, Yasuhiro Kohno·Dec 28, 2019SaveLearn
Constructing a composite Higgs model with built-in large separation of scalesExperimentally the existence of a light 125 GeV Higgs boson is well established but so far no other heavier resonances have been observed. Viable models to describe the Higgs boson as composite…Oliver Witzel, Anna Hasenfratz·Dec 27, 2019SaveLearn
The path optimization for the sign problem of low dimensional QCDThe path optimization has been proposed to weaken the sign problem which appears in some field theories such as finite density QCD. In this method, we optimize the integration path in complex plain…Yuto Mori, Kouji Kashiwa, Akira Ohnishi·Dec 27, 2019SaveLearn
Topology of trace deformed Yang-Mills theoryIn this paper we study, by means of numerical simulations, the topological properties of SU(3) and SU(4) trace deformed Yang-Mills theory defined on R3× S1, in which center…Claudio Bonati, Marco Cardinali, Massimo D'Elia et al.·Dec 27, 2019SaveLearn
B\!\!D(*)ν form factors from lattice QCD with relativistic heavy quarksWe report on our calculation of the B D(*) νform factors in 2+1 flavor lattice QCD. The Möbius domain-wall action is employed for light, strange, charm and bottom quarks. At lattice cutoffs…T. Kaneko, Y. Aoki, G. Bailas et al.·Dec 26, 2019SaveLearn
Lattice Analysis of SU(2) with 1 Adjoint Dirac FlavorRecently SU(2) Yang-Mills theory with one massless adjoint Dirac quark flavor emerges as a novel critical theory that can describe the evolution between a trivial insulator and a topological…Zhen Bi, Anthony Grebe, Gurtej Kanwar et al.·Dec 25, 2019SaveLearn
Topological terms in abelian lattice field theoriesIn this contribution we revisit the lattice discretization of the topological charge for abelian lattice field theories. The construction departs from an initially non-compact discretization of the…M. Anosova, C. Gattringer, D. Göschl et al.·Dec 25, 2019SaveLearn
On the Lefschetz thimbles structure of the Thirring modelThe complexification of field variables is an elegant approach to attack the sign problem. In one approach one integrates on Lefschetz thimbles: over them, the imaginary part of the action stays…Kevin Zambello, Francesco Di Renzo·Dec 24, 2019SaveLearn
Color-electric correlation functions under gradient flowWe report on the progress of our study on the color-electric correlation functions under gradient flow on the lattice. This calculation is the first step of our long-term project to estimate a series…Luis Altenkort, Olaf Kaczmarek, Lukas Mazur et al.·Dec 24, 2019SaveLearn
Determination of the endpoint of the first order deconfiniement phase transition in the heavy quark region of QCDWe study the endpoint of the first order deconfinement phase transition of 2 and 2+1 flavor QCD in the heavy quark region. We perform simulations of quenched QCD and apply the reweighting method to…Shinji Ejiri, Shota Itagaki, Ryo Iwami et al.·Dec 24, 2019SaveLearn
Spectral Methods in Causal Dynamical TriangulationsWe show recent results of the application of spectral analysis in the setting of the Monte Carlo approach to Quantum Gravity known as Causal Dynamical Triangulations (CDT), discussing the behavior of…Giuseppe Clemente, Massimo D'Elia, Alessandro Ferraro·Dec 24, 2019SaveLearn
Quantum Critical Phenomena in an O(4) Fermion ChainWe construct a fermionic lattice model containing interacting spin-12 fermions with an O(4) symmetry. In addition the model contains a Z2 chiral symmetry which prevents a…Hanqing Liu·Dec 24, 2019SaveLearn
Dense 2-color QCD towards continuum and chiral limitsWe study two-color QCD with two flavors of Wilson fermion as a function of quark chemical potential mu and temperature T, for two different lattice spacings and two different quark masses. We find…Tamer Boz, Pietro Giudice, Simon Hands et al.·Dec 23, 2019SaveLearn
Conserved charge fluctuations with smaller-than-physical quark massesWe present results from calculations of conserved charge fluctuations in (2+1)-flavor QCD using light quark masses in the range ms/80 ≤ ml ≤ ms/27, with the strange quark mass (ms)…Mugdha Sarkar, Olaf Kaczmarek, Frithjof Karsch et al.·Dec 23, 2019SaveLearn
End point of the first-order phase transition of QCD in the heavy quark region by reweighting from quenched QCDWe study the end point of the first-order deconfinement phase transition in two and 2+1 flavor QCD in the heavy quark region of the quark mass parameter space. We determine the location of critical…Shinji Ejiri, Shota Itagaki, Ryo Iwami et al.·Dec 22, 2019SaveLearn
Spectral Projectors Method for Staggered FermionsWe extend the spectral projectors method to staggered fermions. Applying the index theorem to the staggered Dirac operator it is possible to work out an expression for the topological susceptibility…Claudio Bonanno, Giuseppe Clemente, Massimo D'Elia et al.·Dec 22, 2019SaveLearn
Decay constant of Bs and B*s mesons from Nf=2 lattice QCDWe report on a two-flavor lattice QCD estimate of the Bs and B*s leptonic decays parameterized by the decay constants fBs and fB*s. In addition to their relevance for…Rahul Balasubramanian, Benoît Blossier·Dec 20, 2019SaveLearn
Sp(2N) Yang-Mills towards large NNon-perturbative aspects of the physics of Sp(2N) gauge theories are interesting for phenomenological and theoretical reasons, and little studied so far, particularly in the approach to the…Jack Holligan, Ed Bennett, Deog Ki Hong et al.·Dec 20, 2019SaveLearn
N=1 Supersymmetric SU(3) Gauge Theory with a TwistWe investigate the pure gauge sector of Super-QCD, i.e. Super-Yang-Mills (SYM) theory, with focus on the bound states. To improve chiral symmetry as well as supersymmetry at finite lattice spacing,…Marc Steinhauser, Andre Sternbeck, Björn Wellegehausen et al.·Dec 20, 2019SaveLearn
Semileptonic Bπν, B Dν, Bs Kν, and Bs Dsν decaysWe present updates for our nonperturbative lattice QCD calculations to determine semileptonic form factors for exclusive B πν, B D ν, Bs K ν, and Bs Dsν decays.…Jonathan Flynn, Ryan Hill, Andreas Jüttner et al.·Dec 20, 2019SaveLearn
Continuous Time Simulations of Strong Coupling LQCD at Finite Baryon DensityWe study lattice QCD in the limit of infinite gauge coupling on a discrete spatial yet continuous Euclidean time lattice at finite baryon chemical potential μB. The continuous time framework is…Marc Klegrewe, Wolfgang Unger·Dec 20, 2019SaveLearn