Tensor network simulation of the (1+1)-dimensional O(3) nonlinear σ-model with θ=π termWe perform a tensor network simulation of the (1+1)-dimensional O(3) nonlinear σ-model with θ=π term. Within the Hamiltonian formulation, this field theory emerges as the…Wei Tang, X. C. Xie, Lei Wang et al.·Sep 23, 2021SaveLearn
Spectral reconstruction details of a gradient-flowed color-electric correlatorIn a recently published work we provide a proof-of-concept of a novel method to extract the heavy quark momentum diffusion coefficient from color-electric correlators on the lattice using gradient…Luis Altenkort, Alexander M. Eller, Olaf Kaczmarek et al.·Sep 23, 2021SaveLearn
Quark and gluon momentum fractions in the pion from Nf=2+1+1 lattice QCDWe perform the first full decomposition of the pion momentum into its gluon and quark contributions. We employ an ensemble generated by the Extended Twisted Mass Collaboration with Nf=2 + 1 +1…Constantia Alexandrou, Simone Bacchio, Georg Bergner et al.·Sep 22, 2021SaveLearn
102 PFLOPS Lattice QCD quark solver on FugakuWe present results on the world's first over 100 PFLOPS single precision lattice QCD quark solver on the japanese new supercomputer Fugaku. We achieve a factor 38 time speedup from the supercomputer…Ken-Ichi Ishikawa, Issaku Kanamori, Hideo Matsufuru et al.·Sep 22, 2021SaveLearn
Monopole-like configurations in the O(3) spin model at the upper critical dimensionWe present a high-precision Monte Carlo study of the O(3) spin theory on the lattice in four dimensions. This model exhibits interesting dynamical features, in particular in the broken-symmetry…Marco Panero, Antonio Smecca·Sep 21, 2021SaveLearn
Funny business from the large Nc finite temperature crossoverIt is well known that the deconfinement transition temperature for SU(Nc) gauge theory is almost independent of Nc, and the transition is first order for Nc 3. In the real world…Thomas DeGrand·Sep 21, 2021SaveLearn
Approaching nuclear interactions with lattice QCDNuclei make up the majority of the visible matter in the Universe; obtaining a first principles description of the nuclear properties and interactions between nuclei directly from the underlying…Marc Illa·Sep 21, 2021SaveLearn
Determination of the continuous β function of SU(3) Yang-Mills theoryIn infinite volume the gradient flow transformation can be interpreted as a continuous real-space Wilsonian renormalization group (RG) transformation. This approach allows one to determine the…Curtis T. Peterson, Anna Hasenfratz, Jake van Sickle et al.·Sep 20, 2021SaveLearn
Spin-1 fields and RG flows in 4 dimensionsThe most general local, classically scale invariant, perturbatively renormalizable, globally SU(N) invariant Lagrangian is constructed for spin-1 fields in 4 dimensions. The total number of…Daniel Nogradi·Sep 20, 2021SaveLearn
First-principle calculation of ηc→ 2γ decay width from lattice QCDWe perform a lattice QCD calculation of the ηc2γ decay width using a model-independent method that requires no momentum extrapolation of the off-shell form factors. This method also…Yu Meng, Xu Feng, Chuan Liu et al.·Sep 20, 2021SaveLearn
Tetraquark systems bb du in the static limit and lattice QCDTwo hadrons with exotic quark content Zb+ bb du were discovered by Belle. We present a lattice study of the bb du systems with various quantum numbers using static…Mitja Sadl, Sasa Prelovsek·Sep 17, 2021SaveLearn
Interpreting machine learning functions as physical observablesWe propose to interpret machine learning functions as physical observables, opening up the possibility to apply "standard" statistical-mechanical methods to outputs from neural networks. This…Gert Aarts, Dimitrios Bachtis, Biagio Lucini·Sep 17, 2021SaveLearn
On the chiral anomaly and the Yang-Mills gradient flowThere are currently two singularity-free universal expressions for the topological susceptibility in QCD, one based on the Yang-Mills gradient flow and the other on density-chain correlation…Martin Lüscher·Sep 16, 2021SaveLearn
Derivative expansion in the HAL QCD method for a separable potentialWe investigate how the derivative expansion in the HAL QCD method works to extract physical observables, using a separable potential in quantum mechanics, which is solvable but highly non-local in…Sinya Aoki, Koichi Yazaki·Sep 16, 2021SaveLearn
Universality of a truncated sigma-modelBosonic quantum field theories, even when regularized using a finite lattice, possess an infinite dimensional Hilbert space and, therefore, cannot be simulated in quantum computers with a finite…Andrei Alexandru, Paulo F. Bedaque, Andrea Carosso et al.·Sep 15, 2021SaveLearn
Confining and chiral properties of QCD in extremely strong magnetic fieldsWe investigate, by numerical lattice simulations, the static quark-antiquark potential, the flux tube properties and the chiral condensate for Nf = 2+1 QCD with physical quark masses in the…Massimo D'Elia, Lorenzo Maio, Francesco Sanfilippo et al.·Sep 15, 2021SaveLearn
Inhomogeneities in the 2-Flavor Chiral Gross-Neveu ModelWe investigate the finite-temperature and -density chiral Gross-Neveu model with an axial UA(1) symmetry in 1+1 dimensions on the lattice. In the limit where the number of flavors Nf…Julian J. Lenz, Michael Mandl, Andreas Wipf·Sep 12, 2021SaveLearn
Relativistic, model-independent determination of electromagnetic finite-size effects beyond the point-like approximationWe present a relativistic and model-independent method to derive structure-dependent electromagnetic finite-size effects. This is a systematic procedure, particularly well-suited for automatization,…M. Di Carlo, M. T. Hansen, N. Hermansson-Truedsson et al.·Sep 10, 2021SaveLearn
Charm (and bottom) baryons and charmonium excitations from the latticeThis report discusses some recent investigations of the heavy hadron spectra using lattice QCD. The first half addresses multiple precision determinations of the masses of charm (and bottom) baryons.…M. Padmanath·Sep 10, 2021SaveLearn
Exploring the 3D Ising gauge-Higgs model in exact Coulomb gauge and with a gauge-invariant substitute for Landau gaugeThe Z2 gauge-Higgs model in three dimensions has two different types of phase transition, confinement-deconfinement and Higgs magnetization. Here they are explored through two order parameters, the…Michael Grady·Sep 9, 2021SaveLearn
The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angleAs present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, we require more precise determinations of fundamental…Teseo San José, Marco Cè, Antoine Gérardin et al.·Sep 9, 2021SaveLearn
Phase diagram of the 2+1-dimensional Gross-Neveu model with chiral imbalanceIn this work, the phase diagram of the 2+1-dimensional Gross-Neveu model is investigated with baryon chemical potential as well as chiral chemical potential in the mean-field approximation. We…Marc Winstel, Laurin Pannullo, Marc Wagner·Sep 9, 2021SaveLearn
Spontaneous symmetry breaking via inhomogeneities and the differential surface tensionWe discuss spontaneously broken quantum field theories with a continuous symmetry group via the constraint effective potential. Employing lattice simulations with constrained values of the order…Gergely Endrődi, Tamás György Kovács, Gergely Markó·Sep 8, 2021SaveLearn
On SU(2)CS-like groups and invariance of the fermionic action in QCDIn this work, we introduce some new U(1) symmetry groups of the free fermionic action in euclidean space-time, which are a consequence of parity and time-reversal symmetries. Afterwards, we discuss…Marco Catillo·Sep 8, 2021SaveLearn
Taming lattice artifacts with Pauli--Villars fieldsAs fermions are added to a lattice gauge theory, one is driven to stronger bare coupling in order to maintain the same renormalized coupling. Stronger bare couplings are usually associated with…Anna Hasenfratz, Yigal Shamir, Benjamin Svetitsky·Sep 7, 2021SaveLearn