Exact Lattice Supersymmetry from Topological Field Theory [PDF]
, 2003 We discuss the connection between supersymmetric field theories and topological field theories and show how this connection may be used to construct local lattice field theories which maintain an exact supersymmetry.
Simon Catterall
openalex +5 more sources
Detecting and Mitigating Mode-Collapse for Flow-based Sampling of Lattice Field Theories [PDF]
Physical Review D, 2023 We study the consequences of mode-collapse of normalizing flows in the context of lattice field theory. Normalizing flows allow for independent sampling.
K. Nicoli +5 more
semanticscholar +1 more source
Critical Lattice Model for a Haagerup Conformal Field Theory. [PDF]
Physical Review Letters, 2021 We use the formalism of strange correlators to construct a critical classical lattice model in two dimensions with the Haagerup fusion category H_{3} as input data.
R. Vanhove +6 more
semanticscholar +1 more source
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
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
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
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
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
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