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“The physics of jamming:
a journey from marble pebbles toward scaling invariant field theory”
Thursday, 26. April 2018
Video-Recording for any system with MP4-support
- Video.mp4 (ca.372 Mb)
15:15 – 16:15
Jamming is a well know phenomenon that you have experienced when the traffic if very
heavy. You cannot move because your neighbors block you and your neighbors cannot
move because you block them. Jamming is a collective phenomenon.
Marble pebbles on the beach are one example of jamming.
However also for well-levigated pebbles, friction will play an important role.
Statistical mechanics may be used to study the case of systems without friction.
The most studied case is the hard sphere gas where the jamming point is reached in the
limit of infinite pressure. In the case of frictionless jamming long-range correlations
are present: we have a new kind of critical system.
Recently the properties of the hard sphere gas have been analytically computed in the
framework of the mean field approximation. Non-trivial critical exponents have been found.
The behavior of the correlation functions at large distances has not yet computed
(it is technically very challenging): at the end one should find a new scaling invariant
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