Results 61 to 70 of about 1,437,304 (362)
Stochastic computation of g − 2 in QED
Journal of High Energy Physics, 2021 We perform a numerical computation of the anomalous magnetic moment (g − 2) of the electron in QED by using the stochastic perturbation theory. Formulating QED on the lattice, we develop a method to calculate the coefficients of the perturbative series ...
Ryuichiro Kitano +2 more
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Canonical simulations with worldlines: an exploratory study in $\phi^{4}_{2}$ lattice field theory [PDF]
, 2017 In this letter we explore the perspectives for canonical simulations in the worldline formulation of a lattice field theory. Using the charged $\phi^4$ field in two dimensions as an example we present the details of the canonical formulation based on ...
O. Orasch, C. Gattringer
semanticscholar +1 more source
Estimation of Thermodynamic Observables in Lattice Field Theories with Deep Generative Models.
Physical Review Letters, 2021 In this Letter, we demonstrate that applying deep generative machine learning models for lattice field theory is a promising route for solving problems where Markov chain Monte Carlo (MCMC) methods are problematic.
K. Nicoli +7 more
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Effective Field Theory of Interactions on the Lattice [PDF]
Few-Body Systems, 2015 We consider renormalization of effective field theory interactions by discretizing the continuum on a tight-binding lattice. After studying the one-dimensional problem, we address s-wave collisions in three dimensions and relate the bare lattice coupling constants to the continuum coupling constants.
Valiente, Manuel, Zinner, Nikolaj T.
openaire +3 more sources
Journal of High Energy Physics, 2019 The computation of the parton distribution functions (PDF) or distribution amplitudes (DA) of hadrons from first principles lattice QCD constitutes a central open problem in high energy nuclear physics.
Joseph Karpie +3 more
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More about the Grassmann tensor renormalization group
Journal of High Energy Physics, 2021 We derive a general formula of the tensor network representation for d-dimensional lattice fermions with ultra-local interactions, including Wilson fermions, staggered fermions, and domain-wall fermions.
Shinichiro Akiyama, Daisuke Kadoh
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Lattice Field Theory Study of Magnetic Catalysis in Graphene [PDF]
, 2016 We discuss the simulation of the low-energy effective field theory (EFT) for graphene in the presence of an external magnetic field. Our fully nonperturbative calculation uses methods of lattice gauge theory to study the theory using a hybrid Monte Carlo
C. DeTar +2 more
semanticscholar +1 more source
Reggeon field theory on a lattice
Physical Review D, 1975 We construct an analog model of interacting Ising spins on a lattice which has the same critical behavior as Reggeon field theory, in the physical number of dimensions. At the critical point the total and elastic cross sections have asymptotic behaviors σtot∝(lns)-γ and σel∝(lns)-2γ-z.
Cardy, J, Sugar, R
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Renormalization in a classical lattice field theory [PDF]
Physical Review A, 1990 We formulate and describe a renormalization-group transformation for classical \ensuremath{\lambda}${\ensuremath{\varphi}}^{4}$-field theory on a lattice. The main idea is to divide the angle variables of the oscillators into the fast ones (large momenta) and the slow ones (low momenta) and to average over the fast ones.
Jochen Bartels +4 more
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Tensor polarizability of the vector mesons from SU(3) lattice gauge theory
Journal of High Energy Physics, 2018 The magnetic dipole polarizabilities of the vector ρ 0 and ρ ± mesons in SU(3) pure gauge theory are calculated in the article. Based on this the authors explore the contribution of the dipole magnetic polarizabilities to the tensor polarization of the ...
E. V. Luschevskaya +4 more
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