Turbulence and Bose Condensation - Institut für Theoretische ...

Generalized Boltzmann equation in ultrasoft
region
Daisuke Satow
CEA Saclay / Kyoto Univ., Maison du Japon Cite internationale universitaire de
Paris 7C, boulevard Jourdan, 75690 PARIS Cedex 14, France
We derive a kinetic equation for quark excitations with an ultrasoft momentum,
g 2 T , from the Kadanoff-Baym equation in QCD at extremely high T in the linear
response regime, where g is the coupling constant and T is temperature of
the equilibrium state [1]. We show that this equation is equivalent to the selfconsistent
equation in the resummed perturbation theory at equilibrium used in
the analysis of the quark spectrum with the ultrasoft momentum [2]. Furthermore,
we derive the equation that determines the n-point function with external
lines for a pair of quarks and (n − 2) gluons with ultrasoft momenta, using the
gauge symmetry.
[1] D. Satow and Y. Hidaka, arXiv:1204.6532 [hep-ph].
[2] Y. Hidaka, D. Satow and T. Kunihiro, Nucl. Phys. A 876, 93 (2012)
Dynamical view of the Schwinger mechanism
Naoto Tanji
IphT, CNRS, CEA-Saclay, 91191, Gif-sur-Yvette Cedex, France
Particle production via the Schwinger mechanism has been studied as a mechanism
of matter formation in the context of heavy-ion collisions. I will describe
particle pair creation in a strong electric field focusing on its real-time dynamics.
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