Results 31 to 40 of about 64,823 (307)
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 +2 more sources
Journal of High Energy Physics, 2019 There exist two methods to study two-baryon systems in lattice QCD: the direct method which extracts eigenenergies from the plateaux of the temporal correlation function and the HAL QCD method which extracts observables from the non-local potential ...
The HAL QCD collaboration +9 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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Parton distribution functions from Ioffe time pseudo-distributions
Journal of High Energy Physics, 2019 In this paper, we present a detailed study of the unpolarized nucleon parton distribution function (PDF) employing the approach of parton pseudo-distribution func- tions. We perform a systematic analysis using three lattice ensembles at two volumes, with
Bálint Joó +5 more
doaj +1 more source
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.
Bartels, Jochen, Chang, Shau-Jin
openaire +3 more sources
Anomalous transport phenomena on the lattice
, 2022 The interrelation between quantum anomalies and electromagnetic fields leads to a series of non-dissipative transport effects in QCD. In this work we study anomalous transport phenomena with lattice QCD simulations using improved staggered quarks in the ...
Markó, Gergely +4 more
core +1 more source
The static force from generalized Wilson loops
, 2021 Recently a method to compute the static force with lattice gauge theory using an insertion of a chromoelectric field into a Wilson loop was proposed.
Philipsen, Owe +5 more
core +1 more source
The chirally rotated Schrödinger functional: theoretical expectations and perturbative tests
Journal of High Energy Physics, 2016 The chirally rotated Schrödinger functional (χSF) with massless Wilson-type fermions provides an alternative lattice regularization of the Schrödinger functional (SF), with different lattice symmetries and a common continuum limit expected from ...
Mattia Dalla Brida +2 more
doaj +1 more source
Moments of Ioffe time parton distribution functions from non-local matrix elements
Journal of High Energy Physics, 2018 We examine the relation of moments of parton distribution functions to matrix elements of non-local operators computed in lattice quantum chromodynamics.
Joseph Karpie +2 more
doaj +1 more source
Logarithmic corrections in Symanzik’s effective theory of lattice QCD [PDF]
, 2021 Einer der finalen Schritte in Simulationen von Gitter Quantenchromodynamik (QCD) oder Gittereichtheorie ist die Kontinuumsextrapolation, um die eigentliche Kontinuumsphysik zu extrahieren.
Husung, Nikolai
core +1 more source