Results 11 to 20 of about 26,590 (306)
Lattice Field Theory with the Sign Problem and the Maximum Entropy Method [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2007 Although numerical simulation in lattice field theory is one of the most effective tools to study non-perturbative properties of field theories, it faces serious obstacles coming from the sign problem in some theories such as finite density QCD and ...
Masahiro Imachi +2 more
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Lattice gauge theory with fluctuating temperature [PDF]
EPJ Web of Conferences, 2011 We study the possibility to implement the canonical Tsallis distribution for lattice field theory simulations. Formally, the application of the Tsallis distribution can be interpreted as introducing a fluctuating temperature.
Schram Z., Biró T.S.
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Radial lattice quantization of 3D ϕ 4 field theory [PDF]
, 2021 The quantum extension of classical finite elements, referred to as quantum finite elements (QFE) [R. C. Brower et al., Lattice ϕ4 field theory on Riemann manifolds: Numerical tests for the 2-d Ising CFT on S2, Phys. Rev. D 98, 014502 (2018). and R.
Howarth, Dean +6 more
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Lattice field theory simulations of Dirac semimetals [PDF]
Annals of Physics, 2018 11 pages, 5 figures, 2 tables, typo in Eq.
V.V. Braguta +2 more
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Field Theory Simulations on a Fuzzy Sphere - an Alternative to the Lattice [PDF]
Proceedings of XXIIIrd International Symposium on Lattice Field Theory — PoS(LAT2005), 2005 We explore a new way to simulate quantum field theory, without introducing a spatial lattice. As a pilot study we apply this method to the 3d λϕ^4 model. The regularisation consists of a fuzzy sphere with radius R for the two spatial directions, plus a discrete Euclidean time.
Medina, Julieta +3 more
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Simulating thimble regularization of lattice quantum field theories [PDF]
Proceedings of 34th annual International Symposium on Lattice Field Theory — PoS(LATTICE2016), 2017 Monte Carlo simulations of lattice quantum field theories on Lefschetz thimbles are non trivial. We discuss a new Monte Carlo algorithm based on the idea of computing contributions to the functional integral which come from complete flow lines. The latter are the steepest ascent paths attached to critical points, i.e.
Di Renzo, Francesco, Eruzzi, Giovanni
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Neural-network analysis of Parton Distribution Functions from Ioffe-time pseudodistributions
Journal of High Energy Physics, 2021 We extract two nonsinglet nucleon Parton Distribution Functions from lattice QCD data for reduced Ioffe-time pseudodistributions. We perform such analysis within the NNPDF framework, considering data coming from different lattice ensembles and dis ...
Luigi Del Debbio +5 more
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HIGH PRECISION SIMULATION TECHNIQUES FOR LATTICE FIELD THEORY [PDF]
International Journal of Modern Physics C, 1993 An overview is given over the recently developed and now widely used Monte Carlo algorithms with reduced or eliminated critical slowing down. The basic techniques are overrelaxation, cluster algorithms and multigrid methods. With these tools one is able to probe much closer than before the universal continuum behavior of field theories on the lattice.
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Novel regularization scheme for nucleon-nucleon lattice simulations with effective field theory [PDF]
Physical Review C, 2020 We propose a new regularization scheme to study the bound state of two-nucleon systems in Lattice Effective Field Theory. Inspired by continuum EFT calculation, we study an exponential regulator acting on the leading-order (LO) and next-to-leading order (NLO) interactions, consisting of local contact terms. By fitting the low-energy coefficients (LECs)
M. Ahmadi +3 more
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, 2018 In the landscape of approaches toward the simulation of Lattice Models with complex action the Complex Langevin (CL) appears as a straightforward method with a simple, well defined setup.
Aarts Gert +17 more
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