Explanipedia

Grid: OneCode and FourAPIs Open

Azusa Yamaguchi, Peter Boyle, Guido Cossu, Gianluca Filaci, Christoph Lehner , et al. · 2022

We discuss a substantial update to the Grid software library for Lattice QCD,\n enabling it to port to multiple GPU architectures while retaining CPU vectorisation and\n SIMD execution within OpenMP threads. The GPU environments supported …

Grid: OneCode and FourAPIs Open

Peter Boyle, Guido Cossu, Gianluca Filaci, Christoph Lehner, Antonin Portelli , et al. · 2022

We discuss a substantial update to the Grid software library for Lattice QCD, enabling it to port to multiple GPU architectures while retaining CPU vectorisation and SIMD execution within OpenMP threads. The GPU environments supported incl…

Nonperturbative Infrared Finiteness in a Superrenormalizable Scalar Quantum Field Theory Open

Guido Cossu, Luigi Del Debbio, Andreas Jüttner, Ben Kitching-Morley, Joseph K. L. Lee , et al. · 2021

This submission contains the Markov-Chain Monte Carlo data required to reproduce central results of the paper "Nonperturbative infrared finiteness in super-renormalisable scalar quantum field theory" (https://arxiv.org/abs/2009.14768). The…

Study of the axial anomaly at high temperature with lattice chiral fermions Open

S. Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, S. Hashimoto , et al. · 2021

We investigate the axial U(1) anomaly of two-flavor QCD at temperatures\n190--330 MeV. In order to preserve precise chiral symmetry on the lattice, we\nemploy the Mobius domain-wall fermion action as well as overlap fermion action\nimpleme…

Ergodic sampling of the topological charge using the density of states Open

Guido Cossu, David Lancaster, Biagio Lucini, Roberto Pellegrini, Antonio Rago · 2021

Nonperturbative infrared finiteness in super-renormalisable scalar quantum field theory -- data release Open

Guido Cossu, Henrique Bergallo Rocha, Luigi Del Debbio, Andreas Jüttner, Ben Kitching-Morley , et al. · 2020

This submission contains the Markov-Chain Monte Carlo data required to reproduce central results of the paper "Nonperturbative infrared finiteness in super-renormalisable scalar quantum field theory" (https://arxiv.org/abs/2009.14768). …

Axial U(1) symmetry, topology, and Dirac spectra at high temperature in Nf=2 lattice QCD Open

Kei Suzuki, Sinya Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya , et al. · 2020

Using lattice QCD simulations with $N_f = 2$ dynamical fermions, we study the\naxial $U(1)$ symmetry, topological charge, and Dirac eigenvalue spectra in the\nhigh-temperature phase in which the chiral symmetry is restored. Our gauge\nense…

Axial U(1) symmetry and mesonic correlators at high temperature in $N_f=2$ lattice QCD Open

Kei Suzuki, Sinya Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya , et al. · 2020

We investigate the high-temperature phase of QCD using lattice QCD simulations with $N_f = 2$ dynamical M\"obius domain-wall fermions. On generated configurations, we study the axial $U(1)$ symmetry, overlap-Dirac spectra, screening masses…

Axial U(1) symmetry and mesonic correlators at high temperature in $N_f=2$ lattice QCD Open

Kei Suzuki, Sinya Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya , et al. · 2020

We investigate the high-temperature phase of QCD using lattice QCD simulations with $N_f = 2$ dynamical Möbius domain-wall fermions. On generated configurations, we study the axial $U(1)$ symmetry, overlap-Dirac spectra, screening masses f…

Symmetries of the light hadron spectrum in high temperature QCD Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, Christof Gattringer , et al. · 2020

Properties of QCD matter change significantly around the chiral crossover temperature, and the effects on $U(1)_A$ and topological susceptibilities, as well as the meson spectrum have been studied with much care. Baryons and the effect of …

Symmetries of the light hadron spectrum in high temperature QCD Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, Christof Gattringer , et al. · 2019

Properties of QCD matter change significantly around the chiral crossover temperature, and the effects on $U(1)_A$ and topological susceptibilities, as well as the meson spectrum have been studied with much care. Baryons and the effect of …

Axial U(1) symmetry, topology, and Dirac spectra at high temperature in $N_f=2$ lattice QCD Open

Kei Suzuki, Sinya Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya , et al. · 2019

Using lattice QCD simulations with $N_f = 2$ dynamical fermions, we study the axial $U(1)$ symmetry, topological charge, and Dirac eigenvalue spectra in the high-temperature phase in which the chiral symmetry is restored. Our gauge ensembl…

Machine learning determination of dynamical parameters: The Ising model case Open

Guido Cossu, Luigi Del Debbio, T. Giani, Ava Khamseh, Michael Wilson · 2019

We train a set of Restricted Boltzmann Machines (RBMs) on one- and two-dimensional Ising spin configurations at various values of temperature, generated using Monte Carlo simulations. We validate the training procedure by monitoring severa…

Strong dynamics with matter in multiple representations: $$\mathrm {SU}(4)$$ gauge theory with fundamental and sextet fermions Open

Guido Cossu, Luigi Del Debbio, Marco Panero, David Preti · 2019

Symmetries of spatial meson correlators in high temperature QCD Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, Christof Gattringer , et al. · 2019

Based on a complete set of $J = 0$ and $J=1$ spatial isovector correlation\nfunctions calculated with $N_F = 2$ domain wall fermions we identify an\nintermediate temperature regime of $T \\sim 220 - 500$ MeV ($1.2T_c$--$2.8T_c$),\nwhere ch…

Axial U(1) symmetry and Dirac spectra in high-temperature phase of $N_f=2$ lattice QCD Open

Kei Suzuki, Sinya Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya , et al. · 2019

The axial $U(1)$ symmetry in the high-temperature phase is investigated with $N_f = 2$ lattice QCD simulations. The gauge ensembles are generated with M\"obius domain-wall fermions, and the overlap/domain-wall reweighting is applied. We fi…

Meson correlation functions at high temperature QCD: $SU(2)_{CS}$ symmetry vs. free quarks Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, L. Ya. Glozman, S. Hashimoto , et al. · 2019

We report on the progress of understanding spatial correlation functions in high temperature QCD. We study isovector meson operators in $n_f=2$ QCD using domain-wall fermions on lattices of $N_s=32$ and different quark masses. It has previ…

Erratum: Approximate degeneracy of spatial correlators in high temperature QCD [Phys. Rev. D 96, 094501 (2017)] Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, L. Ya. Glozman , et al. · 2019

Received 11 February 2019DOI:https://doi.org/10.1103/PhysRevD.99.039901© 2019 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasFinite temperature field theoryLattice QCDQuantum chromodynamicsParticles & Fields

Observation of approximate SU(2) and SU(2n) symmetries in high temperature lattice QCD Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, L. Ya. Glozman , et al. · 2019

We study spatial isovector J = 1 meson correlators in nf = 2 QCD with dynamical domain-wall fermions on 323 × 8 lattices at temperatures T = 220–380 MeV. We observe an approximate degeneracy of all considered correlators with increasing te…

Meson correlation functions at high temperature QCD: $SU(2)_{CS}$ symmetry vs. free quarks Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, L. Ya. Glozman, S. Hashimoto , et al. · 2018

We report on the progress of understanding spatial correlation functions in high temperature QCD. We study isovector meson operators in $N_f=2$ QCD using domain-wall fermions on lattices of $N_s=32$ and different quark masses. It has previ…

Ergodicity of the LLR method for the Density of States Open

Guido Cossu, Biagio Lucini, Roberto Pellegrini, Antonio Rago · 2018

\nThe LLR method is a novel algorithm that enables us to evaluate the density of states in lattice gauge theory. We present our study of the ergodicity properties of the LLR algorithm for the model of Yang Mills SU(3). We show that the use…

Topological susceptibility in 2+1-flavor QCD with chiral fermions Open

Sinya Aoki, Guido Cossu, Hidenori Fukaya, S. Hashimoto, T. Kaneko · 2018

We compute the topological susceptibility X t of 2+1-flavor lattice QCD with dynamical Möbius domain-wall fermions, whose residual mass is kept at 1 MeV or smaller. In our analysis, we focus on the fluctuation of the topological charge den…

Axial U(1) symmetry at high temperature in 2-flavor lattice QCD Open

Kei Suzuki, Sinya Aoki, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya , et al. · 2018

We investigate the axial U (1) A symmetry breaking above the critical temperature in two-flavor lattice QCD. The ensembles are generated with dynamical Möbius domain-wall or reweighted overlap fermions. The U (1) A susceptibility is extrac…

Accelerating HPC codes on Intel(R) Omni-Path Architecture networks: From particle physics to Machine Learning Open

Peter Boyle, Michael Chuvelev, Guido Cossu, Christopher Kelly, Christoph Lehner , et al. · 2017

We discuss practical methods to ensure near wirespeed performance from clusters with either one or two Intel(R) Omni-Path host fabric interfaces (HFI) per node, and Intel(R) Xeon Phi(TM) 72xx (Knight's Landing) processors, and using the Li…

Accelerating HPC codes on Intel(R) Omni-Path Architecture networks: From particle physics to Machine Learning Open

Peter A. Boyle, Michael Chuvelev, Guido Cossu, Christopher Kelly, Christoph Lehner , et al. · 2017

We discuss practical methods to ensure near wirespeed performance from clusters with either one or two Intel(R) Omni-Path host fabric interfaces (HFI) per node, and Intel(R) Xeon Phi(TM) 72xx (Knight's Landing) processors, and using the Li…

Approximate degeneracy of spatial correlators in high temperature QCD Open

Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, L. Ya. Glozman , et al. · 2017

We study spatial isovector meson correlators in $N_f=2$ QCD with dynamical\ndomain-wall fermions on $32^3\\times 8$ lattices at temperatures $T=220-380$\nMeV. We measure the correlators of spin-one ($J=1$) operators including vector,\naxia…

Publisher’s Note: Evidence of effective axial symmetry restoration at high temperature QCD [Phys. Rev. D 96, 034509 (2017)] Open

Akio Tomiya, Guido Cossu, Sinya Aoki, Hidenori Fukaya, S. Hashimoto , et al. · 2017

Received 16 October 2017DOI:https://doi.org/10.1103/PhysRevD.96.079902© 2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasLattice QCDQCD phase transitionsQuantum chromodynamicsNuclear Physics

Lattice calculation of coordinate-space vector and axial-vector current correlators in QCD Open

Masaaki Tomii, Guido Cossu, Brendan Fahy, Hidenori Fukaya, S. Hashimoto , et al. · 2017

We study the vector and axial-vector current correlators in perturbative and non-perturbative regimes of QCD. The correlators in Euclidean coordinate space are calculated on the lattice using the M\"obius domain-wall fermion formulation at…

Evidence of effective axialsymmetry restoration at high temperature QCD Open

Akio Tomiya, Guido Cossu, Sinya Aoki, Hidenori Fukaya, S. Hashimoto , et al. · 2017

We study the axial U(1) symmetry at finite temperature in two-flavor lattice QCD. Employing the Mobius domain-wall fermions, we generate gauge configurations slightly above the critical temperature Tc with different lattice sizes L = 2-4 f…

Chiral behavior of decay form factors in lattice QCD with exact chiral symmetry Open

Sinya Aoki, Guido Cossu, Xu Feng, Hidenori Fukaya, S. Hashimoto , et al. · 2017

We calculate the form factors of the K→πlν semileptonic decays in three-flavor lattice QCD and study their chiral behavior as a function of the momentum transfer and the Nambu-Goldstone boson masses. Chiral symmetry is exactly preserved by…

Guido Cossu YOU? Author Swipe