Properties and uses of the Wilson flow in lattice QCD
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Publication:2248126
DOI10.1007/JHEP08(2010)071zbMATH Open1291.81393arXiv1006.4518OpenAlexW3105821172WikidataQ59253353 ScholiaQ59253353MaRDI QIDQ2248126
Author name not available (Why is that?)
Publication date: 30 June 2014
Published in: (Search for Journal in Brave)
Abstract: Theoretical and numerical studies of the Wilson flow in lattice QCD suggest that the gauge field obtained at flow time t>0 is a smooth renormalized field. The expectation values of local gauge-invariant expressions in this field are thus well-defined physical quantities that probe the theory at length scales on the order of sqrt(t). Moreover, by transforming the QCD functional integral to an integral over the gauge field at a specified flow time, the emergence of the topological (instanton) sectors in the continuum limit becomes transparent and is seen to be caused by a dynamical effect that rapidly separates the sectors when the lattice spacing is reduced from 0.1 fm to smaller values.
Full work available at URL: https://arxiv.org/abs/1006.4518
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