Results 21 to 30 of about 271,677 (330)
Learning lattice quantum field theories with equivariant continuous flows [PDF]
SciPost Physics, 2023 We propose a novel machine learning method for sampling from the high-dimensional probability distributions of Lattice Field Theories, which is based on a single neural ODE layer and incorporates the full symmetries of the problem. We test our model on the \phi^4
Mathis Gerdes +4 more
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Quantum algorithms for open lattice field theory [PDF]
Physical Review A, 2021 Certain aspects of some unitary quantum systems are well-described by evolution via a non-Hermitian effective Hamiltonian, as in the Wigner-Weisskopf theory for spontaneous decay. Conversely, any non-Hermitian Hamiltonian evolution can be accommodated in a corresponding unitary system + environment model via a generalization of Wigner-Weisskopf theory.
Jay Hubisz +2 more
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A New Computational Approach to Lattice Quantum Field Theories [PDF]
Proceedings of The XXVI International Symposium on Lattice Field Theory — PoS(LATTICE 2008), 2009 15 pages, 6 figures; Plenary talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsburg, Virginia ...
Shailesh Chandrasekharan
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Disordered Lattice Glass $ϕ^{4}$ Quantum Field Theory [PDF]
We study numerically the three-dimensional $ϕ^{4}$ spin glass, a prototypical disordered and discretized Euclidean field theory that manifests inhomogeneities in space and time but considers a homogeneous squared mass and lambda terms. The $ϕ^{4}$ lattice glass field theory is a conceptual generalization of spin glasses to continuous degrees of freedom
Dimitrios Bachtis
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Achieving the quantum field theory limit in far-from-equilibrium quantum link models [PDF]
Quantum, 2022 Realizations of gauge theories in setups of quantum synthetic matter open up the possibility of probing salient exotic phenomena in condensed matter and high-energy physics, along with potential applications in quantum information and science ...
Jad C. Halimeh +4 more
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Toda lattice field theories, discrete W algebras, Toda lattice hierarchies and quantum groups [PDF]
Physics Letters B, 1996 In analogy with the Liouville case we study the $sl_3$ Toda theory on the lattice and define the relevant quadratic algebra and out of it we recover the discrete $W_3$ algebra. We define an integrable system with respect to the latter and establish the relation with the Toda lattice hierarchy. We compute the the relevant continuum limits.
L. Bonora +2 more
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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
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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
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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
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