---
res:
bibo_abstract:
- A popular observable in finite-temperature lattice QCD is the so-called singlet
quark-antiquark free energy, conventionally defined in Coulomb gauge. In an effort
to interpret the existing numerical data on this observable, we compute it at
order O(alpha(2)(s)) in continuum, and analyze the result at various distance
scales. At short distances (r << 1/pi T) the behaviour matches that of the gauge-independent
zero-temperature potential; on the other hand at large distances (r << 1/pi T)
the singlet free energy appears to have a gauge-fixing related power-law tail.
At infinite distance the result again becomes physical in the sense that it goes
over to a gauge-independent disconnected contribution, the square of the expectation
value of the trace of the Polyakov loop; we recompute this quantity at O(alpha(2)(s)),
finding for pure SU(N-c) a different non-logarithmic term than in previous literature,
and adding for full QCD the quark contribution. We also discuss the value of the
singlet free energy in a general covariant gauge, as well as the behaviour of
the cyclic Wilson loop that is obtained if the singlet free energy is made gauge-independent
by inserting straight spacelike Wilson lines into the observable. Comparisons
with lattice data are carried out where possible.@eng
bibo_authorlist:
- foaf_Person:
foaf_givenName: Yannis
foaf_name: Burnier, Yannis
foaf_surname: Burnier
foaf_workInfoHomepage: http://www.librecat.org/personId=6284993
orcid: 0000-0001-5774-368X
- foaf_Person:
foaf_givenName: Mikko
foaf_name: Laine, Mikko
foaf_surname: Laine
foaf_workInfoHomepage: http://www.librecat.org/personId=93995
orcid: 0000-0002-2680-4213
- foaf_Person:
foaf_givenName: M.
foaf_name: Vepsalainen, M.
foaf_surname: Vepsalainen
bibo_doi: 10.1007/JHEP01(2010)054
bibo_issue: '1'
bibo_volume: '2010'
dct_date: 2010^xs_gYear
dct_identifier:
- UT:000273717700025
dct_isPartOf:
- http://id.crossref.org/issn/1029-8479
- http://id.crossref.org/issn/1029-8479
dct_language: eng
dct_publisher: Springer Science + Business Media@
dct_subject:
- Lattice QCD
- Heavy Quark Physics
- Thermal Field Theory
- NLO Computations
dct_title: Dimensionally regularized Polyakov loop correlators in hot QCD@
...