Confined gluon from Minkowski space continuation of the PT-BFM SDE solution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F12%3A00384963" target="_blank" >RIV/61389005:_____/12:00384963 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0954-3899/39/3/035003" target="_blank" >http://dx.doi.org/10.1088/0954-3899/39/3/035003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0954-3899/39/3/035003" target="_blank" >10.1088/0954-3899/39/3/035003</a>
Alternative languages
Result language
angličtina
Original language name
Confined gluon from Minkowski space continuation of the PT-BFM SDE solution
Original language description
Recent lattice studies exhibit infrared finite effective QCD charges. The corresponding gluon propagator in the Landau gauge is finite and nonzero, suggesting that the mechanism of dynamical gluon mass generation is in the operation. In this paper, the analytical continuation of the Euclidean (spacelike) pinch technique-background field method solution of the Schwinger-Dyson equation for the gluon propagator to the timelike region of q(2) is found. We found the continuation numerically showing good agreement with a generalized Lehman representation for small Schwinger coupling. The associated non-positive spectral function has an unexpected behavior. Albeit the infrared Euclidean space solution naively suggests a like single-scale 'massive' propagator,the obtained spectrum of the gluon propagator does not correspond to the delta function at single scale q = m; instead more possible singularities are generated. The pattern depends on the details of the assumed Schwinger mechanism: for
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics G-Nuclear and Particle Physics
ISSN
0954-3899
e-ISSN
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Volume of the periodical
39
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
"035003/1"-"035003/16"
UT code for WoS article
000300625800005
EID of the result in the Scopus database
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