Results 71 to 80 of about 1,453,006 (366)

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, O. V. Teryaev, D. Yu. Golubkov, O. V. Solovjeva, R. A. Ishkuvatov   +4 more
doaj   +1 more source

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, Hiromasa Takaura, Shoji Hashimoto   +2 more
doaj   +1 more source

The Tjon band in Nuclear Lattice Effective Field Theory [PDF]

European Physical Journal A, 2018
.We explore the lattice spacing dependence in Nuclear Lattice Effective Field Theory for few-body systems up to next-to-next-to leading order in chiral effective field theory including all isospin breaking and electromagnetic effects, the complete two ...
N. Klein, S. Elhatisari, T. Lähde, Dean Lee, U. Meissner   +4 more
semanticscholar   +1 more source

Non-equilibrium field theory [PDF]

, 2000
I discuss various topics in relativistic non-equilibrium field theory related to high energy physics and cosmology. I focus on non-perturbative problems and how they can be treated on the lattice.Comment: Plenary talk given at the 18th International ...
Aarts, Aarts, Aarts, Ambjorn, Ambjorn, Ambjørn, Ambjørn, Arnold, Arnold, Arnold, Arnold, Arnold, Arnold, Blaizot, Blaizot, Blaizot, Bochkarev, Borsanyi, Boyanovsky, Braaten, Braaten, Bödeker, Bödeker, Bödeker, Bödeker, Bödeker, Bödeker, Bödeker, Cohen, Cooper, Dietrich Bödeker, Felder, Fodor, Frenkel, Grigoriev, Grigoriev, Gross, Hu, Huet, Jeon, Jeon, Kasuya, Kasuya, Khlebnikov, Khlebnikov, Kofman, Kovner, Krasnitz, Krasnitz, Kripfganz, Langer, Lifshitz, Linde, Litim, McLerran, McLerran, Moore, Moore, Moore, Moore, Nair, Nieto, Prokopec, Rajantie, Riotto, Rubakov, Tang, Tang, Taylor, Wang, Wetterich   +70 more
core   +3 more sources

Reconstructing parton distribution functions from Ioffe time data: from Bayesian methods to neural networks

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, Kostas Orginos, Alexander Rothkopf, Savvas Zafeiropoulos   +3 more
doaj   +1 more source

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
doaj   +1 more source

Relativistic-invariant formulation of the NREFT three-particle quantization condition

Journal of High Energy Physics, 2022
A three-particle quantization condition on the lattice is written down in a manifestly relativistic-invariant form by using a generalization of the non-relativistic effective field theory (NREFT) approach.
Fabian Müller, Jin-Yi Pang, Akaki Rusetsky, Jia-Jun Wu   +3 more
doaj   +1 more source

Gauge field theories on a ⊥ lattice [PDF]

AIP Conference Proceedings, 1999
In these notes, the transverse ($\perp$) lattice approach is presented as a means to control the $k^+\to 0$ divergences in light-front QCD. Technical difficulties of both the canonical compact formulation as well as the non-compact formulation of the $\perp$ lattice motivate the color-dielectric formulation, where the link fields are linearized.
openaire   +3 more sources

Lattice field theory simulations of graphene [PDF]

Physical Review B, 2009
We discuss the Monte Carlo method of simulating lattice field theories as a means of studying the low-energy effective theory of graphene. We also report on simulational results obtained using the Metropolis and Hybrid Monte Carlo methods for the chiral condensate, which is the order parameter for the semimetal-insulator transition in graphene, induced
Joaquín E. Drut, Timo A. Lähde
openaire   +3 more sources

Pion-less effective field theory for atomic nuclei and lattice nuclei [PDF]

Physical Review C, 2017
We compute the medium-mass nuclei 16O and 40Ca using pion-less effective field theory (EFT) at next-to-leading order (NLO). The low-energy coefficients of the EFT Hamiltonian are adjusted to experimental data for nuclei with mass numbers A=2 and 3, or ...
Aaina Bansal, S. Binder, A. Ekström, G. Hagen, G. Jansen, Thomas Papenbrock   +5 more
semanticscholar   +1 more source