Results 51 to 60 of about 1,477,861 (328)
Approaches to the sign problem in lattice field theory [PDF]
, 2016 Quantum field theories (QFTs) at finite densities of matter generically involve complex actions. Standard Monte-Carlo simulations based upon importance sampling, which have been producing quantitative first principle results in particle physics for ...
C. Gattringer, K. Langfeld
semanticscholar +1 more source
Lattice field theory simulations of Dirac semimetals [PDF]
, 2017 In this paper the observed Dirac semimetals Na$_3$Bi and Cd$_3$As$_2$ are studied within lattice simulation. We formulate lattice field theory with rooted staggered fermions on anisotropic lattice.
Braguta, V. V. +2 more
core +3 more sources
Journal of High Energy Physics, 2017 We calculate the strong isospin breaking and QED corrections to meson masses and the hadronic vacuum polarization in an exploratory study on a 64 × 243 lattice with an inverse lattice spacing of a −1 = 1.78 GeV and an isospin symmetric pion mass of m π =
P. Boyle +6 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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Induced QCD II: numerical results
Journal of High Energy Physics, 2019 We numerically explore an alternative discretization of continuum SU(N c ) Yang-Mills theory on a Euclidean spacetime lattice, originally introduced by Budzcies and Zirnbauer for gauge group U(N c ).
Bastian B. Brandt +2 more
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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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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
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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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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Optimisation of complex integration contours at higher order
Journal of High Energy Physics, 2021 We continue our study of contour deformation as a practical tool for dealing with the sign problem using the d-dimensional Bose gas with non-zero chemical potential as a toy model.
Francis Bursa, Michael Kroyter
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