English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We perform lattice simulations in pure-SU(2) Yang-Mills theory to investigatehow the infrared behavior of electric and magnetic gluon propagators in Landaugauge is affected by temperature. We consider the largest lattices to date, inan attempt to keep systematic errors under control. Electric and magneticscreening masses are calculated through an Ansatz from the zero-temperaturecase, based on complex-conjugate poles for the momentum-space propagators. Asrecently reported in [1], we find good fits to the proposed form at alltemperatures considered, with different ratios of real to imaginary part of thepole masses for the longitudinal (electric) and transverse (magnetic)propagators. The behavior of the magnetic propagator D_T(p) is in agreementwith the dimensional-reduction picture, showing infrared suppression (with aturnover in momentum) and violation of spectral positivity at all nonzerotemperatures considered. The longitudinal propagator D_L(p) appears to reach aplateau at small momenta and is subject to severe finite-Nt effects around thecritical temperature Tc. As a consequence, only lattices with temporal extentNt > 8 seem to be free from systematic errors. After these errors are removed,the infrared-plateau value is considerably reduced around the transition andthe sharp peak observed previously for this quantity at Tc is no longerpresent. The resulting infrared behavior for D_L(p) at Tc is essentially thesame as for 0.5Tc . An investigation of the temperature range between 0.5Tc andTc reveals that a less pronounced (finite) peak may occur at smallertemperatures, e.g. T ~ 0.9Tc.

Electric and magnetic Landau-gauge gluon propagators in finite-temperature SU(2) gauge theory