Cargando…
The pressure of hot QCD up to $g^{6}$ ln(1/g)
The free energy density, or pressure, of QCD has at high temperatures an expansion in the coupling constant g, known so far up to order g^5. We compute here the last contribution which can be determined perturbatively, g^6 ln(1/g), by summing together results for the 4-loop vacuum energy densities o...
Autores principales: | , , , |
---|---|
Lenguaje: | eng |
Publicado: |
2002
|
Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.67.105008 http://cds.cern.ch/record/592626 |
Sumario: | The free energy density, or pressure, of QCD has at high temperatures an expansion in the coupling constant g, known so far up to order g^5. We compute here the last contribution which can be determined perturbatively, g^6 ln(1/g), by summing together results for the 4-loop vacuum energy densities of two different three-dimensional effective field theories. We also demonstrate that the inclusion of the new perturbative g^6 ln(1/g) terms, together with the so far unknown perturbative and non-perturbative g^6 terms, could potentially extend the applicability of the resummed coupling constant series down to surprisingly low temperatures. |
---|