https://doi.org/10.1051/epjconf/201817507038
Finite temperature gluon propagator in Landau gauge: non-zero Matsubara frequencies and spectral densities
1
CFisUC, Department of Physics, University of Coimbra, P–3004–516 Coimbra, Portugal
2
KU Leuven Campus Kortrijk – KULAK, Department of Physics, Etienne Sabbelaan 53 bus 7657, 8500 Kortrijk, Belgium
3
Ghent University, Department of Physics and Astronomy, Krijgslaan 281-S9, 9000 Gent, Belgium
* Speaker, e-mail: psilva@uc.pt
Published online: 26 March 2018
We report on the lattice computation of the Landau gauge gluon propagator at finite temperature, including the non-zero Matsubara frequencies. Moreover, the corresponding Källén-Lehmann spectral density is computed, using a Tikhonov regularisation together with the Morozov discrepancy principle. Implications for gluon confinement are also discussed.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
