Adjoint chromoelectric and -magnetic correlators with gradient flowWhen QCD is described by a nonrelativistic effective field theory, operators consisting of gluonic correlators of two chromoelectric or -magnetic fields will often appear in descriptions of…Viljami Leino·Jan 12, 2024SaveLearn
Incorporating DDπ effects and left-hand cuts in lattice QCD studies of the Tcc(3875)+We generalize the relativistic field-theoretic three-particle finite-volume scattering formalism to describe generic DDπ systems in the charm C=2 sector. This includes the isospin-0 channel, in…Maxwell T. Hansen, Fernando Romero-López, Stephen R. Sharpe·Jan 12, 2024SaveLearn
Update on the gradient flow scale on the 2+1+1 HISQ ensemblesWe report on the ongoing effort of improving the determination of the gradient flow scale on the (2+1+1)-flavor HISQ ensembles generated by the MILC collaboration. We compute the scales…Alexei Bazavov, Claude Bernard, Carleton E. DeTar et al.·Jan 12, 2024SaveLearn
Machine learning a fixed point action for SU(3) gauge theory with a gauge equivariant convolutional neural networkFixed point lattice actions are designed to have continuum classical properties unaffected by discretization effects and reduced lattice artifacts at the quantum level. They provide a possible way to…Kieran Holland, Andreas Ipp, David I. Müller et al.·Jan 12, 2024SaveLearn
Chiral susceptibility and axial U(1) anomaly near the (pseudo-)critical temperatureWe investigate relations between the chiral susceptibility and axial U(1) anomaly in lattice QCD at high temperatures. Employing the exactly chiral symmetric Dirac operator, we separate the purely…S. Aoki, Y. Aoki, H. Fukaya et al.·Jan 12, 2024SaveLearn
The dependence of observables on action parametersMany applications in Lattice field theory require to determine the Taylor series of observables with respect to action parameters. A primary example is the determination of electromagnetic…Guilherme Catumba, Alberto Ramos, Bryan Zaldivar·Jan 12, 2024SaveLearn
Application of the projective truncation and randomized singular value decomposition to a higher dimensionWe study the tensor renormalization group (TRG) in the dimension larger than two as the Higher-order TRG (HOTRG) with the randomized SVD method. The randomized SVD and the detailed discussion on the…Katsumasa Nakayama·Jan 12, 2024SaveLearn
The thermal photon emissivity at the QCD chiral crossover from imaginary momentum correlatorsThe thermal photon emissivity at the QCD chiral crossover is investigated using imaginary momentum correlators. These have been measured on a newly generated 20 × 963 lattice-QCD ensemble…Ardit Krasniqi, Marco Cè, Tim Harris et al.·Jan 11, 2024SaveLearn
Towards charm physics with stabilised Wilson fermionsWe report on a first study towards the use of stabilised Wilson fermions in heavy flavour physics. In particular, we are interested in fixing the charm quark mass via various physical observables and…Patrick Fritzsch, Jochen Heitger, Fabian Joswig et al.·Jan 11, 2024SaveLearn
Optimized Distillation Profiles for Heavy-Light SpectroscopyIt has been demonstrated that distillation profiles can be employed to build optimized quarkonium interpolators for spectroscopy calculations in lattice QCD. We test their usefulness for heavy-light…Jan Neuendorf, Giulia Egbring, Jochen Heitger et al.·Jan 11, 2024SaveLearn
A Microscopic study of Magnetic monopoles in Topological InsulatorsIn this article, we analyze a magnetic monopole in topological insulators. The monopole obtain a fractional electric charge because of the Witten effect. We consider this system with a microscopic…Shoto Aoki, Hidenori Fukaya, Naoto Kan et al.·Jan 11, 2024SaveLearn
A non-perturbative determination of b gClose to the continuum limit, lattice QCD with mass-degenerate Wilson quarks can be described by Symanzik's effective continuum action, which contains the dimension 5 operator, $m\,…Mattia Dalla Brida, Roman Höllwieser, Francesco Knechtli et al.·Jan 11, 2024SaveLearn
Determination of the CP restoration temperature at θ=π in 4D SU(2) Yang-Mills theory through simulations at imaginary θThe 't Hooft anomaly matching condition provides constraints on the phase structure at θ=π in 4D SU(N) Yang-Mills theory. In particular, assuming that the theory is confined and the CP…Mitsuaki Hirasawa, Kohta Hatakeyama, Masazumi Honda et al.·Jan 11, 2024SaveLearn
Advancing real-time Yang-Mills: towards real-time observables from first principlesThe complex Langevin (CL) method shows great promise in enabling the calculation of observables for theories with complex actions. Nevertheless, real-time quantum field theories have remained largely…Kirill Boguslavski, Paul Hotzy, David I. Müller·Jan 11, 2024SaveLearn
Exploring the Critical Points in QCD with Multi-Point Pad\'e and Machine Learning Techniques in (2+1)-flavor QCDUsing simulations at multiple imaginary chemical potentials for (2+1)-flavor QCD, we construct multi-point Pad\'e approximants. We determine the singularties of the Pad\'e approximants and…Jishnu Goswami, D. A. Clarke, P. Dimopoulos et al.·Jan 11, 2024SaveLearn
Chimera baryon spectrum in the Sp(4) completion of composite Higgs modelsIn strongly coupled gauge theories that serve as completions of composite Higgs models, the fermionic bound states formed by fermions (hyperquarks) transforming in different representations, called…Ho Hsiao, Ed Bennett, Deog Ki Hong et al.·Jan 11, 2024SaveLearn
A lattice regularization of Weyl fermions in a gravitational backgroundWe report on a lattice fermion formulation with a curved domain-wall mass term to nonperturbatively describe fermions in a gravitational background. In our previous work in 2022, we showed under the…Shoto Aoki, Hidenori Fukaya, Naoto Kan·Jan 11, 2024SaveLearn
Trace anomaly form factors from lattice QCDThe hadron mass can be obtained through the calculation of the trace of the energy-momentum tensor in the hadron which includes the trace anomaly and sigma terms. The anomaly due to conformal…Bigeng Wang, Fangcheng He, Gen Wang et al.·Jan 10, 2024SaveLearn
Improved Dirichlet boundary conditions for lattice gauge-fermion theoriesHybrid Monte Carlo (HMC) simulations of lattice gauge theories with fermionic matter rely on the invertibility of the lattice Dirac operator. Near-zero modes of the latter can therefore significantly…Tobias Rindlisbacher, Kari Rummukainen, Ahmed Salami·Jan 10, 2024SaveLearn
Progress in meson-meson scattering at large NcWe study the large Nc scaling of meson-meson scattering amplitudes in a theory with Nf=4 degenerate quark flavors. We focus on two different scattering channels, one having the…Jorge Baeza-Ballesteros, Pilar Hernández, Fernando Romero-López·Jan 10, 2024SaveLearn
Exploring the QCD phase diagram with three flavors of M\"obius domain wall fermionsWe present an update on the study of the QCD phase transition with 3 flavors of M\"obius domain wall fermions at zero baryon density. We performed simulations on lattices of size…Yu Zhang, Yasumichi Aoki, Shoji Hashimoto et al.·Jan 10, 2024SaveLearn
Understanding the nature of baryon resonancesThis presentation opens with a brief review of lattice QCD calculations showing the 2s radial excitation of the nucleon sits at approximately 2 GeV, well above the Roper resonance position. We then…Derek B. Leinweber, Curtis D. Abell, Liam C. Hockley et al.·Jan 10, 2024SaveLearn
SymEFT predictions for local fermion bilinearsBeyond spectral quantities, Symanzik Effective Theory (SymEFT) predictions of the asymptotic lattice-spacing dependence require the inclusion of an additional minimal basis of higher-dimensional…Nikolai Husung·Jan 9, 2024SaveLearn
Generalized form factors of the pion and kaon using twisted mass fermionsWe present an update on our lattice calculations of the Mellin moments of PDFs and GPDs for the pion and kaon, using momentum-boosted meson states. In particular, we focus on the calculation of the…Joseph Delmar, Constantia Alexandrou, Simone Bacchio et al.·Jan 8, 2024SaveLearn
Hadronic contribution to the running of the electromagnetic coupling constant from lattice QCD: challenges at short distancesThe electromagnetic coupling constant, α, is one of the fundamental parameters of the Standard Model (SM). Its value at the Z boson mass, α(MZ), is of particular interest as it enters…Sophie Mutzel·Jan 8, 2024SaveLearn