Applications of thermo field dynamics to quark-gluon plasma in equilibrium and non equilibriul and non equilibrium phase state
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Date
2012
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Universite Mouloud MAMMERI Tizi-Ouzou
Abstract
The thermo eld dynamics, a real-time formalism for nite temperature
quantum eld theory (TFD), is used to calculate the rates for e+e reactions
at nite temperature and for the pion production. The results indicate
that temperature plays an important role in de ning the possible hadronic
state after the plasma has cooled down. It is also utilised to de ne the
fragmentation function at high energy experiments. The de nition of the
fragmentation is extended to nite temperature. The results at T = 0 and
T 6= 0 are compared. In general, we nd that the fragmentation function
decreases in magnitude. At the end, this formulation of Quantum eld
theory (TFD) as well as LvN approach are extended to de ne two-point
correlators at nite t and T, and time-dependent Green-functions for open
systems. We obtain results for two-point correlators, the Green-functions
for scalar eld and 4 eld theory to second order and for Green-functions
for fermions.
Description
[s.l] : [s.n], 2012. - 165 F. : ill. ; 30 Cm + CD-ROM.
Bibliographie
Keywords
dynamics to quark-gluon, equilibriul
Citation
Physique