Könyv Infrared behavior of dispersion relations in hot QCD and scalar QED Bouakaz Karima

Infrared behavior of dispersion relations in hot QCD and scalar QED

Szerző: Bouakaz Karima
Nyelv: Angol
Kötés: Puha kötésű
Kiadó: Scholars' Press
Elérhetőség: Beszállítói készleten
Küldés 5-8 napon belül
92 966 Ft
In this book, we calculate: (i) The damping rate of ultrasoft gluons in the context of hard-thermal-...

Információk a könyvről

Szerző
Nyelv
Angol
Kötés
Könyv - Puha kötésű
Kiadva
2014
oldal
148
EAN
9783639668063
ISBN
3639668065
Enbook ID
09147647
Súly
227
Méretek
152 x 229 x 9

Teljes leírás

In this book, we calculate: (i) The damping rate of ultrasoft gluons in the context of hard-thermal-loop summed perturbation of massless quantum chromodynamics (QCD) at high temperature. (ii) The damping rate and energy of ultrasoft scalars in the context of massless scalar quantum electrodynamics (scalar QED) at high temperature too. In the case of QCD, an expansion in powers of the ultrasoft external momentum is used, before the Matsubara sums are done. The persistence of infrared sensitivity in the final result may then be partly attributed to this method of calculation. In the context of scalar QED, the calculation is done in two ways: first with the expansion before the Matsubara sums and then with the expansion after. The same results are obtained by both methods. Hence, the early momentum expansion is not responsible for the infrared sensitivity.

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