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Abstract
摘要
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Phenomenological studies indicate matter produced in heavy ion collisions thermalizes shortly after the collisions. While the mechanism remains unclear, it is believed to attribute to strong coupling. Holography allows us to treat dynamics in strongly coupled field theory. In this talk, I will start by introducing a gravity dual picture of heavy ion collisions, which consists of stringy debris falling in AdS background. The falling of stringy debris naturally leads to a gravitational collapse model for thermalization in heavy ion collisions. I will discuss detail of the model and present results on different probes of the thermalization process, which imply a top-down scenario for thermalization at strong coupling. I will also discuss a gravitational shock wave collision model for heavy ion collisions. The model shows a critical phenomenon in thermalization as a function of impact parameter. |
