Speaker
Hideaki Iida
(Kyoto University)
Description
The entropy production in the initial stage of relativistic heavy-ion
collision is studied based on the classical Yang-Mills dynamics in the
non-expanding plasma by constructing the corresponding (quantum) coherent state.
The decoherence entropy is calculated from the distribution of the
gluon occupation number given by the coherent state.
We find that the importance of the fluctuations in the longitudinal direction
in the initial glasma state for the onset time of the chaotic behavior and hence the entropy production;
the larger the fluctuations, the fater the thermalization.
We show that reasonable strengths of the initial fluctuations with respect to the
amplitude of the background classical field could account for the early thermalization suggested
by the phenomenological analysis based on the hydrodynamics, provided that the decoherence time is obtained.
Author
Hideaki Iida
(Kyoto University)
Co-authors
Akira Ohnishi
(Kyoto University)
Teiji Kunihiro
(Kyoto University)
Dr
Tohru,T. Takahashi
(Gumma National College of Technilogy)
