scholarly journals Confinement and the photon propagator in 3D compact QED: A lattice study in the Landau gauge at zero and finite temperature

2003 ◽  
Vol 67 (3) ◽  
Author(s):  
M. N. Chernodub ◽  
E.-M. Ilgenfritz ◽  
A. Schiller
Keyword(s):  
Finite Temperature ◽  
Landau Gauge ◽  
Photon Propagator

scholarly journals INFRARED DIVERGENCE IN QED3 AT FINITE TEMPERATURE

1999 ◽  
Vol 14 (18) ◽  
pp. 2921-2947 ◽  
Author(s):  
DOMINIC LEE ◽  
GEORGIOS METIKAS
Keyword(s):  
Finite Temperature ◽  
Statistical Physics ◽  
Order Term ◽  
Dyson Equation ◽  
Infrared Divergence ◽  
Fermion Mass ◽  
Photon Propagator ◽  
Transverse Part ◽  
Transverse Photon ◽  
Range Of Values

We consider various ways of treating the infrared divergence which appears in the dynamically generated fermion mass, when the transverse part of the photon propagator in N flavour QED 3 at finite temperature is included in the Matsubara formalism. This divergence is likely to be an artifact of taking into account only the leading order term in the [Formula: see text] expansion when we calculate the photon propagator and is handled here phenomenologically by means of an infrared cutoff. Inserting both the longitudinal and the transverse part of the photon propagator in the Schwinger–Dyson equation, we find the dependence of the dynamically generated fermion mass on the temperature and the cutoff parameters. It turns out that consistency with certain statistical physics arguments imposes conditions on the cutoff parameters. For parameters in the allowed range of values we find that the ratio r=2* Mass (T=0)/critical temperature is approximately 6, consistent with previous calculations which neglected the transverse photon contribution.

scholarly journals Landau gauge gluon and ghost propagators from lattice QCD withNf=2twisted mass fermions at finite temperature

2013 ◽  
Vol 87 (11) ◽  
Author(s):  
R. Aouane ◽  
F. Burger ◽  
E.-M. Ilgenfritz ◽  
M. Müller-Preussker ◽  
A. Sternbeck
Keyword(s):  
Lattice Qcd ◽  
Finite Temperature ◽  
Landau Gauge

scholarly journals PHOTONS GENERATED BY PLASMA FLUCTUATIONS

2020 ◽  
Vol 9 (4) ◽  
Author(s):  
Miroslav Pardy ◽  
Keyword(s):  
Finite Temperature ◽  
Collisionless Plasma ◽  
Radiative Corrections ◽  
Photon Propagator ◽  
Field Methods ◽  
Plasma Fluctuations ◽  
Spectral Formula

The totally ionized charged collisionless plasma at finite temperature is considered. Using the statistical and Schwinger field methods we derive the production of photons from the plasma by the Cerenkov mechanism. We derive the spectral formula of emitted photons by the plasma fluctuations. The calculation can be extended to the photon propagator involving radiative corrections.

scholarly journals Finite temperature Landau gauge lattice quark propagator

2019 ◽  
Vol 79 (9) ◽  
Author(s):  
Orlando Oliveira ◽  
Paulo J. Silva
Keyword(s):  
Wave Function ◽  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Finite Temperature ◽  
Quark Mass ◽  
Chiral Symmetry Breaking ◽  
Form Factors ◽  
Landau Gauge ◽  
Quark Propagator ◽  
Quark Wave Function

Abstract The quark propagator at finite temperature is investigated using quenched gauge configurations. The propagator form factors are investigated for temperatures above and below the gluon deconfinement temperature $$T_c$$Tc and for the various Matsubara frequencies. Significant differences between the functional behaviour below and above $$T_c$$Tc are observed both for the quark wave function and the running quark mass. The results for the running quark mass indicate a link between gluon dynamics, the mechanism for chiral symmetry breaking and the deconfinement mechanism. For temperatures above $$T_c$$Tc and for low momenta, our results support also a description of quarks as free quasiparticles.

scholarly journals GLUONS AT FINITE TEMPERATURE IN LANDAU GAUGE YANG–MILLS THEORY

2005 ◽  
Vol 20 (24) ◽  
pp. 1797-1811 ◽  
Author(s):  
AXEL MAAS
Keyword(s):  
High Temperature ◽  
Finite Temperature ◽  
Landau Gauge ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Soft Scale ◽  
Yang Mills ◽  
Infrared Behavior ◽  
The One

The infrared behavior of Yang–Mills theory at finite temperature provides access to the role of confinement. In this review recent results on this topic from lattice calculations and especially Dyson–Schwinger studies are discussed. These indicate persistence of a residual confinement even in the high-temperature phase. The confinement mechanism is very similar to the one in the vacuum for the chromomagnetic sector. In the chromoelectric sector screening occurs at the soft scale g2T, although not leading to a perturbative behavior.

scholarly journals Lattice Landau gauge photon propagator for 4D compact QED

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Lee C. Loveridge ◽  
Orlando Oliveira ◽  
Paulo J. Silva
Keyword(s):  
Landau Gauge ◽  
Photon Propagator
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