The gluon propagator at high temperature

• Published in: Physics letters. B Vol. 355; no. 3; pp. 511 - 517
• Main Authors: Heller, U.M., Karsch, F., Rank, J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 03-08-1995
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(95)00748-A

We study the gluon propagator in Landau gauge in the deconfined phase of
SU(2) gauge theory. From the long-distance behaviour of correlation functions of temporal and spatial components of the gauge fields we extract electric (
m
e
) and magnetic (
m
m
) screening masses. For temperatures larger than twice
T
c
we find no additional temperature dependence in
m
e(T)
T
, while
m
m(T)
T
drops with increasing temperature. The decrease is consistent with the expected behaviour,
m
m
(
T) ∼
g
2(
T)
T. We find
m
e
(
T) = 2.484(52)
T and
m
m
(
T) = 0.466(15)
g
2(
T)
T.