TY  - THES
AB  - We determine the three-loop effective parameters of the dimensionally reduced theory of EQCD as matching coefficients to full QCD. The mass parameter $\mE$ is interpreted as the high temperature, perturbative contribution to the Debye screening mass of chromo-electric fields and enters the pressure of QCD at the order of $g^7$. The effective coupling $\gE$ can be used to compute the spatial string tension of QCD. However, we suspect that the effective coupling $\gE$ obtains through renormalization contributions from higher order operators that have not yet been taken into account. Therefore our result reflects the (still divergent) contribution from the super-renormalizable EQCD Lagrangian. In addition, we present a new method for computing tensor sum-integrals and provide a generalization to the known computation techniques of spectacles-type sum-integrals.
DA  - 2013
LA  - eng
PY  - 2013
TI  - Three-loop Debye mass and effective coupling in thermal QCD
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:361-26327052
Y2  - 2024-11-22T03:17:28
ER  -