Krylov complexity in quantum field theory, and beyond [PDF]
Journal of High Energy Physics, 2022 We study Krylov complexity in various models of quantum field theory: free massive bosons and fermions on flat space and on spheres, holographic models, and lattice models with a UV-cutoff.
Alexander Avdoshkin +2 more
semanticscholar +1 more source
Entanglement Hamiltonians: From Field Theory to Lattice Models and Experiments [PDF]
Annals of Physics, 2022 Results about entanglement (or modular) Hamiltonians of quantum many‐body systems in field theory and statistical mechanics models, and recent applications in the context of quantum information and quantum simulation, are reviewed.
M. Dalmonte +3 more
semanticscholar +1 more source
Quantum mean estimation for lattice field theory
Physical Review D, 2023 We demonstrate the quantum mean estimation algorithm on Euclidean lattice field theories. This shows a quadratic advantage over Monte Carlo methods which persists even in presence of a sign problem, and is insensitive to critical slowing down. The algorithm is used to compute $π$ with and without a sign problem, a toy U(1) gauge theory model, and the ...
Erik J. Gustafson +2 more
openaire +2 more sources
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
Accelerating Lattice Quantum Field Theory Calculations via Interpolator Optimization Using Noisy Intermediate-Scale Quantum Computing. [PDF]
Physical Review Letters, 2019 The only known way to study quantum field theories in nonperturbative regimes is using numerical calculations regulated on discrete space-time lattices.
A. Avkhadiev, P. Shanahan, R. Young
semanticscholar +1 more source
Hyperbolic Lattice for Scalar Field Theory in AdS$_3$ [PDF]
, 2022 : We construct a tessellation of AdS 3 , by extending the equilateral triangulation of AdS 2 on the Poincar´e disk based on the (2 , 3 , 7) triangle group, suitable for studying strongly coupled phenomena and the AdS/CFT correspondence.
R. Brower, Cameron V. Cogburn, E. Owen
semanticscholar +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
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
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
Advances in machine-learning-based sampling motivated by lattice quantum chromodynamics [PDF]
Nature Reviews Physics, 2023 Machine-learning-based sampling strategies have been recently developed for lattice quantum chromodynamics applications. These methods are in their early stages, but have the potential to enable currently intractable first-principles calculations in ...
K. Cranmer +4 more
semanticscholar +1 more source