# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## Entropy production in classical Yang-Mills system from color-glass condensate initial condition with noise

16 Aug 2012, 16:00
2h

Poster Pre-equilibrium and initial state dynamics

### Speaker

Hideaki Iida (Kyoto University)

### Description

Possible thermalization mechanism in heavy-ion collisions is explored in classical Yang-Mills(CYM) theory with the initial condition of color-glass condensate with noise varied. We calculate the Lyapunov exponents and show that even a tiny noise triggers instability of the system and then a chaotic behavior sets in as described by the positive Lyapunov exponents, or Kolmogorov-Sinai(K-S) entropy, which would take a saturate value after a characteristic time dependent on the ratio of strengths of the noise to the back ground coherent fields. Thus we see that the entropy production is achieved in CYM theory with a realistic initial condition of relativistic heavy-ion collisions.

### Primary author

Hideaki Iida (Kyoto University)

### Co-authors

Akira Ohnishi (Kyoto University) Prof. Andreas Shaefer (Universität Regensburg) Dr Arata Yamamoto (RIKEN) Teiji Kunihiro (Kyoto University) Prof. Toru Takahashi (Gunma National College of Technology)

### Presentation Materials

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