Results 31 to 40 of about 1,453,006 (366)
Implementing the three-particle quantization condition for π + π + K + and related systems
Journal of High Energy Physics, 2022 Recently, the formalism needed to relate the finite-volume spectrum of systems of nondegenerate spinless particles has been derived. In this work we discuss a range of issues that arise when implementing this formalism in practice, provide further ...
Tyler D. Blanton +2 more
doaj +1 more source
More on the flavor dependence of m ϱ /f π
Journal of High Energy Physics, 2021 In previous work, [ arXiv:1905.01909 ], we have calculated the m ϱ /fπ ratio in the chiral and continuum limit for SU(3) gauge theory coupled to N f = 2, 3, 4, 5, 6 fermions in the fundamental representation.
Andrey Yu. Kotov +3 more
doaj +1 more source
Flow-based generative models for Markov chain Monte Carlo in lattice field theory [PDF]
Physical Review D, 2019 A Markov chain update scheme using a machine-learned flow-based generative model is proposed for Monte Carlo sampling in lattice field theories. The generative model may be optimized (trained) to produce samples from a distribution approximating the ...
M. S. Albergo, G. Kanwar, P. Shanahan
semanticscholar +1 more source
Nucleon momentum fraction, helicity and transversity from 2+1-flavor lattice QCD
Journal of High Energy Physics, 2021 A detailed analysis of the systematic uncertainties in the calculation of the isovector momentum fraction, 〈x〉 u − d , helicity moment, 〈x〉Δu − Δd , and the transversity moment, 〈x〉 δu − δd , of the nucleon is presented using high-statistics data on ...
Nucleon Matrix Elements (NME) collaboration +7 more
doaj +1 more source
Gauge-equivariant flow models for sampling in lattice field theories with pseudofermions [PDF]
Physical Review D, 2022 This work presents gauge-equivariant architectures for flow-based sampling in fermionic lattice field theories using pseudofermions as stochastic estimators for the fermionic determinant.
Ryan Abbott +11 more
semanticscholar +1 more source
Isospin-1/2 Dπ scattering and the lightest D 0 ∗ $$ {D}_0^{\ast } $$ resonance from lattice QCD
Journal of High Energy Physics, 2021 Isospin-1/2 Dπ scattering amplitudes are computed using lattice QCD, working in a single volume of approximately (3.6 fm)3 and with a light quark mass corresponding to m π ≈ 239 MeV.
Luke Gayer +6 more
doaj +1 more source
Graphene as a Lattice Field Theory [PDF]
Proceedings of 9th International Workshop on Critical Point and Onset of Deconfinement — PoS(CPOD2014), 2015 We introduce effective field theories for the electronic properties of graphene in terms of relativistic fermions propagating in 2+1 dimensions, and outline how strong inter-electron interactions may be modelled by numerical simulation of a lattice field theory.
Costas Strouthos +2 more
openaire +3 more sources
Lattice String Field Theory [PDF]
Proceedings of The XXVIII International Symposium on Lattice Field Theory — PoS(Lattice 2010), 2011 7 pages, 2 figures. To appear in the Proceedings of the XXVIIIth International Symposium on Lattice Field Theory (Lattice 2010), Villasimius, Italy, June 14-19 ...
Francis Bursa, Michael Kroyter
openaire +2 more sources
Fermion-bag inspired Hamiltonian lattice field theory for fermionic quantum criticality [PDF]
Physical Review D, 2019 Motivated by the fermion-bag approach, we construct a new class of Hamiltonian lattice field theories that can help us to study fermionic quantum critical points, particularly those with four-fermion interactions.
Emilie Huffman, S. Chandrasekharan
semanticscholar +1 more source
Flow-based sampling for fermionic lattice field theories [PDF]
Physical Review D, 2021 Algorithms based on normalizing flows are emerging as promising machine learning approaches to sampling complicated probability distributions in a way that can be made asymptotically exact.
M. S. Albergo +8 more
semanticscholar +1 more source