Results 31 to 40 of about 26,590 (306)
Double parton distributions in the nucleon from lattice QCD
Journal of High Energy Physics, 2021 We evaluate nucleon four-point functions in the framework of lattice QCD in order to extract the first Mellin moment of double parton distributions (DPDs) in the unpolarized proton.
Gunnar S. Bali +4 more
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Journal of High Energy Physics, 2021 Elastic scattering amplitudes for I = 0 DK and I = 0, 1 D K ¯ $$ D\overline{K} $$ are computed in S, P and D partial waves using lattice QCD with light-quark masses corresponding to m π = 239 MeV and m π = 391 MeV.
Gavin K. C. Cheung +6 more
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Analysis of a dilaton EFT for lattice data
Journal of High Energy Physics, 2018 In a recent paper, we developed and applied a dilaton-based effective field theory (EFT) to the analysis of lattice-simulation data for a class of confining gauge theories with near-conformal infrared behavior.
Thomas Appelquist +2 more
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Simulating lattice field theories on multiple thimbles [PDF]
EPJ Web of Conferences, 2018 Simulating thimble regularization of lattice field theory can be tricky when more than one thimble is to be taken into account. A couple of years ago we proposed a solution for this problem. More recently this solution proved to be effective in the case of 0+1 dimensional QCD.
openaire +3 more sources
An optical-lattice-based quantum simulator for relativistic field theories and topological insulators [PDF]
New Journal of Physics, 2012 We present a proposal for a versatile cold-atom-based quantum simulator of relativistic fermionic theories and topological insulators in arbitrary dimensions. The setup consists of a spin-independent optical lattice that traps a collection of hyperfine states of the same alkaline atom, to which the different degrees of freedom of the field theory to be
Mazza, L. +5 more
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Canonical simulations with worldlines: An exploratory study in ϕ24 lattice field theory [PDF]
International Journal of Modern Physics A, 2018 In this paper, we explore the perspectives for canonical simulations in the worldline formulation of a lattice field theory. Using the charged [Formula: see text] field in two dimensions as an example, we present the details of the canonical formulation based on worldlines and outline the algorithmic strategies for canonical worldline simulations.
Oliver Orasch, Christof Gattringer
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Dynamically-coupled partial-waves in ρπ isospin-2 scattering from lattice QCD
Journal of High Energy Physics, 2018 We present the first determination of ρπ scattering, incorporating dynamically-coupled partial-waves, using lattice QCD, a first-principles numerical approach to QCD.
Antoni J. Woss +5 more
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Tetraquark operators in lattice QCD and exotic flavour states in the charm sector
Journal of High Energy Physics, 2017 We present a general class of operators resembling compact tetraquarks which have a range of colour-flavour-spin structures, transform irreducibly under the symmetries of the lattice and respect other relevant symmetries.
Gavin K. C. Cheung +4 more
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Dark matter from strong dynamics: the minimal theory of dark baryons
Journal of High Energy Physics, 2018 As a simple model for dark matter, we propose a QCD-like theory based on SU(2) gauge theory with one flavor of dark quark. The model is confining at low energy and we use lattice simulations to investigate the properties of the lowest-lying hadrons ...
Anthony Francis +3 more
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Notes on lattice observables for parton distributions: nongauge theories
Journal of High Energy Physics, 2020 We review recent theoretical developments concerning the definition and the renormalization of equal-time correlators that can be computed on the lattice and related to Parton Distribution Functions (PDFs) through a factorization formula.
Luigi Del Debbio +2 more
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